808nm VCSEL application (Semiconductor pumped solid state laser)

In recent years, the market demand of laser processing has increased due to its inherent advantages and technological development, solid-state  laser  has  widely drawn market attention due to its narrow pulse widths, high output energy, high peak power and good material absorption.

 

Take the industrial field as an example, in addition to traditional laser marking, scribing, cutting, drilling, material removal, surface treatment and special material   processing   applications,   the development of new technologies such as additive manufacturing, 3D printing, new display, UV laser marking, etc., further expand the application of solid-state laser.

 

The 808nm laser diode is the core component of the pump source. The working principle of the pump source is to use a 808nm laser diode to pump by injecting current. Its working voltage and current  are  compatible  with  integrated circuit, so the threshold is monolithically integrated to obtain a high-speed modulated laser output. The laser performance of the laser requires uniform optical properties, good optical transparency and stable performance.

 

For semiconductor pumped solid-state lasers, the coupling of light is very important. There are two kinds of coupling, spatial coupling and fiber coupling.  For spatial coupling, the pump source and the substrate can be separated so as to reduce the production costs and complexity of manufacturing process. For fiber coupling, a fusion splicer is required for welding of optical fibers, which increases manufacturing costs. Brightlaser’s 808nm VCSEL chip is suitable for spatial coupling type of 808nm high power diode pump solid state lasers, and the power level can be achieved up to hundreds of watts. Compared  with  the   traditional  808nm EEL pump source, VCSEL has better wavelength stability, the wavelength temperature coefficient is 0.07nm/°C while that of EEL is 0.25-0.3nm/°C. Besides, VCSEL has the characteristics of smaller divergence angle and round light spot, which is beneficial for collimation or focusing and simplifies the coupling link, it also helps to reduce costs and improve reliability. Furthermore, VCSEL has the advantages of high reliability, wide operating temperature range, and can better meet industrial requirements of lasers. The use of VCSEL pump laser sources is the trend of high-performance solid-state lasers and chip solid-state lasers.

 

At present, Brightlaser has 3W, 6W, 10-12W 808nm VCSEL chips, with power conversion efficiency up to 45%, high reliability, high beam quality, long life, compact structure and low cost.  As the core device of the semiconductor pumped solid-state laser, the demand of 808nm VCSEL chip is expected to be increased.

 

Brightlaser 808nm VCSEL chip has a flat package, small size and light weight. It has the characteristics of small temperature  influence,  low  wavelength drift as low as 0.07nm/°C, high output power, stable performance and long life of 50,000 hours.

The device based on Brightlaser 808nm VCSEL laser diode can be applied to 808nm high power vertical stacked semiconductor laser module, and it can also be used in laser medical and other applications.  Brightlaser  can  also  provide product  customization  services,  such  as vertical stacking of multiple laser array bars to form a high-power laser output. High-density laser array bar stacking technology is used with bar spacing being small to enable the module to obtain high-brightness laser output while maintaining a small size and high efficiency.

Innovations For Freedom

Brightlaser was founded in 2014, is a global pioneer supplier in VCSEL technology from components, sensors, to total solutions for AI/IoT applications including Optical Communication, Consumer Electronics, ADAS, Machine Vision, Telecom, Robotics, Smart House, Surveillance System, etc.  
As a high-tech company, Brightlaser possesses its own VCSEL intellectual properties in wafer design, advanced chip process, and applications. Brightlaser headquartered in Hong Kong, established branch offices in Shen Zhen and Zhong Shan of China. The factory located in Zhong Shan covers footprint of 160,000 Sqft. equipped with globally state-of-art GaAs techniques, and the first 6-inch VCSEL chip fab & packaging line in mainland China.
In recent years, Brightlaser has caught up extremely quickly with all the opportunities the market has been giving, is becoming increasingly competitive. Currently, we are working with world-wide-leading partners and customers in technologies, marketing and sales.
To cope with the rapidly growing, we are seeking professional dealers, distributors to join this promising field.As a self-driven, proactive, taking initiative, team player, you are welcome to our fast-paced, dynamic team of collaborators.