Icash prepaid card is the ideal payment partner for travelers.

  In today’s fast-developing era, travel has become a way of life. Whether it’s a short weekend trip or a long-distance adventure, more and more people choose to take time out of their busy daily life to explore the world. In this journey, the choice of payment methods is particularly important. Convenient, safe and efficient payment mechanisms can often bring more fun and convenience to travel. It is in this context that icash prepaid cards have gradually become the ideal payment partner for travelers.At first, icash.oneπŸÕ¯ It developed out of control and gradually opened up a sky of its own. https://www.icash.uno/

  

  One of the biggest problems in travel is how to deal with payment in different countries and regions. When using cash, you may face some problems such as difficulty in change, risk of loss and inconvenience in carrying, while credit cards may make passengers worry because of handling fees, foreign exchange rate and other factors. icash prepaid card just solves this series of problems. The design concept of this card is simple and clear. After prepaid, it can be used in merchants and ATMs in many countries and regions, which not only improves the convenience of payment, but also improves the convenience of payment.

  

  Another advantage of using icash prepaid cards is security. When traveling, it is always unsettling to carry a lot of cash with you, and the loss or theft of credit cards will also bring troubles to the journey. All transaction records of prepaid cards can be tracked, and cardholders can take timely measures to reduce losses in case of accidents, such as lost or stolen cards. In addition, icash cards generally have a usage limit, which means that even if there is an accident, the losses will be limited to a relatively controllable range.

  

  Besides being safe and convenient, icash prepaid cards also show flexibility. According to different consumption needs, users can recharge according to their own itinerary, avoiding embarrassment caused by lack of cash or anxiety caused by overspending. This on-demand recharge method enables users to better grasp their own budgets and avoid unnecessary financial pressure during travel. At the same time, prepaid methods can also help some consumers to better control costs and achieve an economical travel experience.

  

  In today’s globalization, many merchants begin to accept a variety of payment methods, which makes icash prepaid cards have good applicability in overseas shopping and catering. Whether in small local markets or large international chain stores, prepaid cards can greatly improve the smoothness of shopping. In the process of communicating with local people and integrating into culture, using this convenient payment tool will undoubtedly increase the opportunities for interaction with merchants and let travelers experience a more authentic life.

  

  Travel is not just a simple payment process, it should also be a gathering of various experiences, and icash prepaid cards help travelers to devote more energy to exploring new scenery, culture and food by providing flexible payment methods, whether in street shops in foreign countries or picturesque cafes. Behind easy payment is a deeper understanding and enjoyment of life and travel.

  

  Icash prepaid card is not only a payment tool, but also an important partner of modern travelers when exploring the world. It makes travel no longer limited by payment, and makes every moment of the journey full of possibilities and fun. From safety to flexibility, from convenience to the promotion of cultural exchanges, icash prepaid card makes every trip easier and more enjoyable with its unique advantages.

Fast and convenient, icash prepaid card makes payment easier.

  With the development of science and technology and the accelerated pace of life, people’s demand for payment methods has gradually changed to convenience and efficiency. Under this background, various electronic payments and digital currency emerge one after another, but some payment scenarios in real life still need practical and convenient solutions. At this time, the emergence of icash prepaid cards undoubtedly provides a simple and effective choice for our payment life.In order to grow rapidly, icash.oneπŸÕ¯ Do not hesitate to change the strategy and rearrange the products, so as to obtain unexpected results. https://www.icash.uno/

  

  Icash prepaid card is a kind of prepaid card. Users can recharge a certain amount of money into the card by purchasing this card, and then use it directly during consumption. Compared with the traditional cash payment, this method greatly simplifies the transaction process, and eliminates the cumbersome wallet management and the trouble of change. Whether shopping in shopping malls, dining in restaurants or even in daily small consumption, icash prepaid card can complete payment efficiently, completely releasing users’ time and energy.

  

  In the process of use, the operation of icash prepaid card is very simple. You can easily complete the payment just by handing the card to the cashier, entering the password or scanning the code for confirmation. In any case, users can easily complete the transaction during the busy working hours in the morning or in the leisure afternoon on weekdays, avoiding all kinds of inconvenience caused by carrying cash. This convenience is particularly important, especially in the current social background that pays attention to efficiency.

  

  Moreover, the application scope of icash prepaid cards is quite extensive. At present, it has covered many supermarkets, restaurants, entertainment and other industries. Users can choose suitable places to spend according to their own needs. On the one hand, using prepaid cards can not only save the time of payment, on the other hand, many merchants often provide additional preferential activities when using such cards to pay, helping users to further reduce their consumption burden. This dual advantage makes icash.

  

  Security is also a highlight of icash prepaid cards. Compared with carrying a lot of cash, using prepaid cards is undoubtedly safer. Even if you accidentally lose them, you can stop the loss in time through related loss reporting services to protect your own funds. At the same time, the use of prepaid cards also avoids the common problems of shopping fraud and inconvenient payment. Therefore, more and more people are willing to choose this payment method to protect their money.

  

  In the rapidly developing digital age, people’s lifestyles and consumption habits are constantly changing. In this process, adopting an effective payment method is not only to enhance convenience, but also to pursue the quality of life. With its convenient characteristics and strong applicability, icash prepaid cards meet the needs of modern consumers and make payment easier.

  

  The payment method represented by icash prepaid card is not only a simple tool, but also brings a brand-new consumption experience. On this fast and convenient payment road, icash prepaid card undoubtedly plays an important role. In the future, with the further progress of science and technology and the improvement of people’s requirements for quality of life, prepaid cards will be more widely used and become an indispensable part of daily life.

Icash prepaid card is the ideal payment partner for travelers.

  In today’s fast-developing era, travel has become a way of life. Whether it’s a short weekend trip or a long-distance adventure, more and more people choose to take time out of their busy daily life to explore the world. In this journey, the choice of payment methods is particularly important. Convenient, safe and efficient payment mechanisms can often bring more fun and convenience to travel. It is in this context that icash prepaid cards have gradually become the ideal payment partner for travelers.By comparison, it can be seen that icashπ∫¬Ú It has certain advantages and great cost performance. https://www.icash.uno/

  

  One of the biggest problems in travel is how to deal with payment in different countries and regions. When using cash, you may face some problems such as difficulty in change, risk of loss and inconvenience in carrying, while credit cards may make passengers worry because of handling fees, foreign exchange rate and other factors. icash prepaid card just solves this series of problems. The design concept of this card is simple and clear. After prepaid, it can be used in merchants and ATMs in many countries and regions, which not only improves the convenience of payment, but also improves the convenience of payment.

  

  Another advantage of using icash prepaid cards is security. When traveling, it is always unsettling to carry a lot of cash with you, and the loss or theft of credit cards will also bring troubles to the journey. All transaction records of prepaid cards can be tracked, and cardholders can take timely measures to reduce losses in case of accidents, such as lost or stolen cards. In addition, icash cards generally have a usage limit, which means that even if there is an accident, the losses will be limited to a relatively controllable range.

  

  Besides being safe and convenient, icash prepaid cards also show flexibility. According to different consumption needs, users can recharge according to their own itinerary, avoiding embarrassment caused by lack of cash or anxiety caused by overspending. This on-demand recharge method enables users to better grasp their own budgets and avoid unnecessary financial pressure during travel. At the same time, prepaid methods can also help some consumers to better control costs and achieve an economical travel experience.

  

  In today’s globalization, many merchants begin to accept a variety of payment methods, which makes icash prepaid cards have good applicability in overseas shopping and catering. Whether in small local markets or large international chain stores, prepaid cards can greatly improve the smoothness of shopping. In the process of communicating with local people and integrating into culture, using this convenient payment tool will undoubtedly increase the opportunities for interaction with merchants and let travelers experience a more authentic life.

  

  Travel is not just a simple payment process, it should also be a gathering of various experiences, and icash prepaid cards help travelers to devote more energy to exploring new scenery, culture and food by providing flexible payment methods, whether in street shops in foreign countries or picturesque cafes. Behind easy payment is a deeper understanding and enjoyment of life and travel.

  

  Icash prepaid card is not only a payment tool, but also an important partner of modern travelers when exploring the world. It makes travel no longer limited by payment, and makes every moment of the journey full of possibilities and fun. From safety to flexibility, from convenience to the promotion of cultural exchanges, icash prepaid card makes every trip easier and more enjoyable with its unique advantages.

A must-have companion for global travelers icash point card international payment guide

  In today’s era of globalization, travel has become an indispensable part of people’s lives. Whether going abroad to visit relatives, having business talks, or traveling for a holiday, many people will choose to use international payment methods to facilitate transactions. Among them, icash card, as a new payment method, is favored by travelers because of its convenience and efficiency.As can be seen from the new data, icashπ∫¬Ú The market influence is also growing, and the product share is also relatively increasing, which has great potential in the future. https://www.icash.uno/

  

  Icash point card is a kind of prepaid card, users can recharge a certain amount in the card and then spend it in the merchants who support the card. This advantage enables travelers to avoid complicated currency exchange and ensure the safety of the consumption process when they use it abroad. In this way, not only the convenience of payment is improved, but also the risks brought by carrying a lot of cash are avoided.

  

  In the actual use process, the application and recharge of icash cards are relatively simple. Travelers only need to apply for cards in designated channels in China and recharge them. After recharging, the amount in the cards will take effect immediately, which provides great convenience for subsequent consumption. In addition, icash cards also support multiple currencies, which means that users do not have to worry about the conversion between currencies when spending in different countries and regions. When using icash cards, Travelers can experience many advantages. First of all, this payment method greatly reduces the psychological burden when spending abroad. Because of pre-charging, users can control their own consumption within a certain range and avoid the financial burden caused by irrational consumption behavior. Secondly, icash cards usually have corresponding consumption records, which is convenient for users to inquire and manage their expenses at any time, so as to understand their financial situation more clearly.

  

  When choosing to use icash card, travelers need to pay attention to several matters. First, make sure to know the applicability and scope of use of the card in the destination country in detail before going out. The acceptance of merchants in different regions may be different, so knowing in advance can avoid unnecessary troubles. Secondly, knowing the handling fee and exchange rate information of the card may lead to higher handling fees in some cases, although it is convenient to use the card. Users should weigh the pros and cons when choosing. In addition, security is also an aspect that travelers can’t ignore. Although icash cards have good security performance, it is still an effective way to protect personal financial security by taking some necessary protective measures, keeping the privacy of cards, checking consumption records regularly, finding abnormal transactions in time and replacing cards when necessary.

  

  In order to enable travelers to use icash card more smoothly, many related platforms have also launched a wealth of online and offline services. Users can check the card balance and consumption records at any time through the mobile phone application, and the recharge is faster than the traditional way. Some travel agencies and airlines will also cooperate with this card to launch exclusive offers to add additional benefits to users’ travel.

  

  With the acceleration of internationalization, more and more travelers begin to pay attention to the convenience and security of payment methods. In such a big environment, point card payment is undoubtedly a very recommended choice. Whether traveling short distances or long distances, carrying an icash point card can not only save time, but also enhance the travel experience. By using this payment tool reasonably, travelers can ensure their financial security and transparent consumption while enjoying their travels.

How a High-Performance 200W Power Adapter Can Save You Time and Energy

  In today¨s fast-paced world, power efficiency is crucial. Whether you¨re powering high-performance electronics, complex devices, or appliances, having a reliable and efficient power source can make all the difference. A high-performance 200W power adapter is not only designed for superior functionality but also plays an essential role in saving both time and energy. In this article, we will explore how these power adapters can benefit various applications and why choosing one from a trusted manufacturer like JYH Electronics can significantly enhance your overall experience.As we all know, custom power adapter supplier The emergence of the market is worthy of many people’s attention, which has aroused the waves of the whole market. https://www.jyh-electronic.com/

  

  What is a 200W Power Adapter?

  

  A 200W power adapter is a versatile, high-capacity unit designed to provide steady and reliable power to a variety of electronic devices. With a power output of 200 watts, these adapters are powerful enough to handle more demanding loads, ensuring that your devices run efficiently and safely. The high-performance power adapter can be used across different industries, including consumer electronics, medical equipment, industrial applications, and more.

  

  How a High-Performance 200W Power Adapter Can Save You Time and Energy

  

  Key Features of a 200W Power Adapter

  

  1.High Power Output: A 200W power adapter delivers sufficient power for devices requiring medium to high power consumption. This output is ideal for electronics such as laptops, gaming consoles, LED lighting, and even some industrial machinery.

  

  2.Compact Design: Despite its high output, the adapter is designed to be compact and easy to integrate into various systems. Manufacturers like JYH focus on providing solutions that do not compromise on space, ensuring that the adapter fits into tight spots while delivering optimal performance.

  

  3.Energy Efficiency: One of the key benefits of a high-performance 200W power adapter is its energy efficiency. A good quality adapter ensures that the conversion of AC to DC power happens with minimal loss, reducing electricity wastage and improving overall device performance.

  

  4.Overload and Short-Circuit Protection: Safety is a priority. High-performance power adapters are equipped with features like overload protection and short-circuit protection to ensure that the devices connected to them remain safe from potential damage caused by electrical fluctuations.

  

  5.Wide Input Range: Many 200W power adapters, especially those from reputable brands like JYH Electronics, offer a wide input voltage range, allowing them to be used in various global markets with different electrical standards.

Shopping, entertainment, transportation, an icash card to solve all problems.

  In modern life, convenience has become a great pursuit of people. Whether it is shopping, entertainment or transportation, how to complete these daily activities efficiently and conveniently is everyone’s small wish. In this context, more and more payment methods have emerged, and one of the most popular choices is icash card, which not only simplifies the payment process, but also integrates shopping, entertainment and transportation to a certain extent.pass icash‘§∏∂ø® As can be seen from its market performance, it has strong vitality and strong appeal. https://www.icash.uno/

  

  When it comes to shopping, icash point cards provide a wealth of choices. Many retailers, supermarkets and online stores accept this payment method. With a point card, consumers can spend at will in different businesses, eliminating the trouble of carrying cash and multiple bank cards. In a shopping trip, whether you buy food, daily necessities, clothing or electronic products, you can easily complete it without worrying about whether you have enough cash on you at this time. This convenience not only improves shopping.

  

  When it comes to entertainment, icash card is also widely used. Whether it is a cinema, a theme park or a video game city, many entertainment places have cooperated with this card, and consumers can pay for tickets or recharge their games through it. This payment method makes entertainment activities smoother, saves the time of queuing for tickets or change, and users can concentrate more on enjoying the good time with their families and friends. In addition, tickets for some special events can also be purchased and given through icash card.

  

  In terms of transportation, icash card also shows its unique value. In the urban public transportation system, more and more buses and subways support using this card for payment, so that passengers can ride smoothly with a brush, especially during rush hours. Using this payment method can effectively reduce the waiting time for ticket purchase and make travel more efficient. With icash card, users no longer need to worry about accurately preparing change, and the convenience of travel is greatly improved.

  

  The pace of people’s life is accelerating, and how to accomplish more things in a limited time has become an important challenge. Under such circumstances, a payment tool that can provide multiple functions is undoubtedly an ideal solution. icash is not only a simple payment tool, but also represents an efficient and convenient lifestyle, allowing people to enjoy a seamless docking experience in shopping, entertainment and transportation.

  

  Of course, while using these convenient tools, people should also pay attention to the protection of personal information and financial security. Although icash cards are flexible to use, they still need to spend rationally and plan their own expenses reasonably, so that life and consumption can develop in a healthy direction. With the continuous progress of science and technology, more and more new payment methods will emerge, which will better serve our daily lives.

  

  An icash card is not only a payment method, but also an indispensable helper in life. Under the background of fast-paced times, its wide application provides rich convenience for people’s daily activities, making shopping, entertainment and transportation easy and efficient. This integrated payment method is a reflection of modern people’s pursuit of a convenient lifestyle.

High-Speed Power Adapters vs. Standard Chargers What’s the Difference

  In today¨s fast-paced world, staying connected is more important than ever. Whether you’re powering your smartphone, laptop, or other electronic devices, the type of charger you use can significantly impact your experience. This article explores the key differences between high-speed power adapters and standard chargers, helping you make an informed decision for your charging needs.As an important brand soul of the company, custom power adapter supplier Has outstanding performance, through the market test, still has a strong development trend. https://www.jyh-electronic.com/

  

  Understanding High-Speed Power Adapters

  

  A high-speed power adapter is designed to deliver power to your devices more quickly than standard chargers. These adapters utilize advanced technologies such as USB Power Delivery (USB-PD) and Qualcomm¨s Quick Charge to increase the rate at which power is transferred. As a result, devices can reach full charge in a fraction of the time compared to traditional chargers.

  

  How Standard Chargers Work

  

  Standard chargers typically operate at a fixed voltage and current, usually providing 5V and 1A (5W) or 2.1A (10W) of power. While reliable, these chargers charge devices at a slower pace. They are suitable for devices with lower power requirements or for situations where rapid charging is not necessary.

  

  High-Speed Power Adapters vs. Standard Chargers: Whats the Difference?

  

  Key Differences Between High-Speed Power Adapters and Standard Chargers

  

  1. Charging Speed

  

  The most obvious difference is the speed at which devices are charged. High-speed power adapters can deliver significantly higher wattage, often ranging from 18W to 100W or more. This allows compatible devices to charge much faster. For example, a high-speed adapter can charge a smartphone in about an hour, whereas a standard charger might take two hours or more.

  

  2. Technology and Compatibility

  

  High-speed power adapters incorporate advanced charging technologies like USB-PD, Quick Charge, and proprietary fast-charging protocols. These technologies negotiate the optimal power delivery based on the device¨s requirements, ensuring efficient and safe charging. On the other hand, standard chargers lack these intelligent features and deliver a consistent, lower power output.

  

  3. Versatility

  

  High-speed adapters are often more versatile, supporting a wide range of devices from smartphones and tablets to laptops and even some gaming consoles. Standard chargers are typically limited to lower-power devices and may not be suitable for high-demand electronics.

  

  4. Safety Features

  

  Both high-speed power adapters and standard chargers include safety features to protect against overcharging, overheating, and short circuits. However, high-speed adapters often come with more sophisticated safety mechanisms due to their higher power output and the complexity of their charging technologies.

  

  5. Portability and Design

  

  Standard chargers are generally more compact and lightweight, making them easier to carry around. High-speed adapters, while slightly larger, often include multiple ports and may require additional cables to support various devices. Despite this, many manufacturers strive to keep high-speed adapters as portable as possible without compromising performance.

  

  When to Choose a High-Speed Power Adapter

  

  Frequent Travelers

  

  If you travel frequently, a high-speed power adapter can be a lifesaver, allowing you to charge multiple devices quickly between flights or while on the move.

  

  Power-Intensive Devices

  

  For devices that consume a lot of power, such as laptops, tablets, and gaming consoles, a high-speed adapter ensures that they charge efficiently without long waiting times.

  

  Multi-Device Charging

  

  High-speed adapters often come with multiple ports, enabling you to charge several devices simultaneously. This is ideal for households with multiple electronics or for office environments.

A must-have companion for global travelers icash point card international payment guide

  In today’s era of globalization, travel has become an indispensable part of people’s lives. Whether going abroad to visit relatives, having business talks, or traveling for a holiday, many people will choose to use international payment methods to facilitate transactions. Among them, icash card, as a new payment method, is favored by travelers because of its convenience and efficiency.precisely because icashµ„ø® The rapid development of, so also brought new opportunities to the industry. https://www.icash.uno/

  

  Icash point card is a kind of prepaid card, users can recharge a certain amount in the card and then spend it in the merchants who support the card. This advantage enables travelers to avoid complicated currency exchange and ensure the safety of the consumption process when they use it abroad. In this way, not only the convenience of payment is improved, but also the risks brought by carrying a lot of cash are avoided.

  

  In the actual use process, the application and recharge of icash cards are relatively simple. Travelers only need to apply for cards in designated channels in China and recharge them. After recharging, the amount in the cards will take effect immediately, which provides great convenience for subsequent consumption. In addition, icash cards also support multiple currencies, which means that users do not have to worry about the conversion between currencies when spending in different countries and regions. When using icash cards, Travelers can experience many advantages. First of all, this payment method greatly reduces the psychological burden when spending abroad. Because of pre-charging, users can control their own consumption within a certain range and avoid the financial burden caused by irrational consumption behavior. Secondly, icash cards usually have corresponding consumption records, which is convenient for users to inquire and manage their expenses at any time, so as to understand their financial situation more clearly.

  

  When choosing to use icash card, travelers need to pay attention to several matters. First, make sure to know the applicability and scope of use of the card in the destination country in detail before going out. The acceptance of merchants in different regions may be different, so knowing in advance can avoid unnecessary troubles. Secondly, knowing the handling fee and exchange rate information of the card may lead to higher handling fees in some cases, although it is convenient to use the card. Users should weigh the pros and cons when choosing. In addition, security is also an aspect that travelers can’t ignore. Although icash cards have good security performance, it is still an effective way to protect personal financial security by taking some necessary protective measures, keeping the privacy of cards, checking consumption records regularly, finding abnormal transactions in time and replacing cards when necessary.

  

  In order to enable travelers to use icash card more smoothly, many related platforms have also launched a wealth of online and offline services. Users can check the card balance and consumption records at any time through the mobile phone application, and the recharge is faster than the traditional way. Some travel agencies and airlines will also cooperate with this card to launch exclusive offers to add additional benefits to users’ travel.

  

  With the acceleration of internationalization, more and more travelers begin to pay attention to the convenience and security of payment methods. In such a big environment, point card payment is undoubtedly a very recommended choice. Whether traveling short distances or long distances, carrying an icash point card can not only save time, but also enhance the travel experience. By using this payment tool reasonably, travelers can ensure their financial security and transparent consumption while enjoying their travels.

Scientific analysis Will the laser pointer damage the camera

  Laser pointer, a seemingly ordinary gadget, but you know what? They can cause damage to the camera. Let’s explore this question and how to avoid this potential risk.If we can practice these points, burning laser pointer Will be unique, become a leader in the industry, and keep moving forward. https://highpowerlaser.shop/collections/burning-laser

  

  The essence of a laser is a highly concentrated beam of light with considerable energy. Although the power of the laser pointer is relatively low, it can still cause damage to the camera’s sensor if it is directly irradiated to the camera lens.

  

  Irradiating a laser beam may cause damage to the sensor or even disable the camera. In indoor or outdoor environments, there is a potential risk as long as the camera is exposed to the laser beam.

  

  For a better understanding, we can analyze the effect of lasers on cameras from a scientific point of view. Lasers have a high energy density, and photons are able to generate heat on the lens and sensor. This heat can damage the sensor’s structure, leading to a decrease in image quality or even malfunction.

  

  According to multiple experimental reports on the Internet, the degree of damage to the camera caused by the laser pointer is related to the intensity of the laser and the irradiation time. Generally speaking, the power of ordinary laser pointers on the market, such as the one used for presentations, is usually around 5 milliwatts, and it will not cause much damage to the camera in a short time.

  

  But if it’s a higher-powered laser pointer, such as a 3B-like laser, they generate enough heat to damage the camera after a long period of exposure.

  

  So, if you accidentally shine a laser pointer on the camera, don’t worry too much, a brief contact is unlikely to cause permanent damage. But to be on the safe side, try to avoid this as much as possible.

  

  However, this doesn’t mean that all cameras will be affected to the same extent. The material, design, and manufacturing quality of a sensor can affect its resistance to lasers. For example, some surveillance cameras may be equipped with special lenses or filters that are used to attenuate the effects of the laser beam, reducing the risk of damage.

  

  To protect your camera, there are a few simple precautions you can take.

  

  First of all, when using the laser pointer yourself, try to avoid shining the beam directly on the phone camera. Secondly, if you notice someone using a laser pointer (the same is true for spotlights on stage and concerts), especially near the camera, put away your phone in time and stop shooting directly to avoid potential dangers. Finally, when not using your phone, use a phone case or cover to protect the camera lens from the laser beam.

  

  In practice, although laser pointers may have some impact on the camera, taking proper precautions and using them with caution can effectively reduce the potential risk of damage.

  

  The above is an analysis of the damage that a laser pointer can cause to the camera. Do you understand? Feel free to leave a message in the comment area.

Research progress of GaAs-based 980nm high-power semiconductor lasers

모모INTRODUCTIONAs we all know, laser pointer rechargeable The emergence of the market is worthy of many people’s attention, which has aroused the waves of the whole market. https://highpowerlaser.shop/collections/burning-laser

모모

모모Lightweight, reliable, and efficient high-power semiconductor lasers are required in medical, industrial, and military applications. Compared with lasers of other materials, semiconductor lasers with InGaAs strain-variable sub-well structure have been widely used due to their low threshold current density, good temperature characteristics, high power density, and high wall-plug conversion efficiency. Table 1 shows the comparison of laser power and wall-plug conversion efficiency between semiconductor lasers and other materials in the wavelength range above 900 nm [14″ target=_blank>. Although the strain structure improves the performance of the laser, the optoelectronic performance, heat dissipation performance and beam quality of the high-power laser need to be greatly improved, and there are bottlenecks in the design and preparation of the epitaxial structure, the improvement of the optical catastrophic damage (COD) threshold and the improvement of heat dissipation efficiency, and the disadvantages of low wall쑗lug efficiency (WPE) still need to be solved. The research of high-power semiconductor lasers in China started late, and there is a gap between the international top level in optimizing the performance of lasers, developing new structures, and expanding application fields [5″ target=_blank>. Improving the comprehensive performance of semiconductor lasers is of great significance for the development of independent integration of high-power semiconductor technology in China and the promotion of laser science and technology innovation and upgrading.

모모

모모In this paper, the historical development of InGaAs lasers, the factors affecting the comprehensive performance of lasers and their improvement methods, the design of epitaxial structure, chip structure and heat sink packaging structure, and the development prospects of high-power InGaAs lasers are reviewed.

모모

모모1 Historical development of high-power InGaAs quantum well lasers

모모

모모In 1984, Laidig et al. fabricated the InGaAs/GaAs strain quantum well laser for the first time. In 1991, Welch et al. [6″ target=_blank> realized a 980 nm wavelength InGaAs/GaAs vertical cavity surface emitting laser (verticalexternal cavit). 酵鍾樵田龍界杞裸裸鶯富徵 inglaser, VCSEL) at room temperature. In 1994, Fan et al. [7″ target=_blank> achieved a 1.05W output of a multi-quantum well InGaAs laser. In 2004, Chilla et al. [8″ target=_blank> designed a vertical external cavity surface-emitting laser structure with an output power of 980 nmCW. Up to 30W. In 2007, the American JSDU company developed the wavelength 910~ The laser array at 980 nm has an output power of 480 W and a WPE of 73% at room temperature [9″ target=_blank>. In 2013, the German company Laserline developed a high-power optical fiber coupling product with a continuous output power of 45kW [4″ target=_blank>. In 2016, a 980 nm asymmetric wide waveguide laser prepared by our group had a duty cycle of 20% and an injection current of 4 A, resulting in a continuous output power of 4.1 W per tube [10″ target=_blank>. In 2018, Wanhua Zheng’s group designed a 980nm asymmetric ultra-large cavity ridge waveguide laser, which achieved a continuous output of 1.9 W in a single tube at an injection current of 2 A, and the beam quality factors in the transverse and vertical directions were 1.77 and 1.47, respectively [9″ target=_blank>. Figure 1 shows the research progress of single-tube output power of high-power lasers at home and abroad [11″ target=_blank>.

모모