On May 20, the 2025 Laser Processing Industry - Ringier Technology Innovation Awards Ceremony was held in Suzhou. Everbright's 976nm 135/155μm 300W fiber-coupled module, based on an on-chip wavelength-stabilized diode chip, won the Ringier Technology Innovation Award in the category of Optical Components and Accessories!

Expert Review:

The product is expected to break through the technical bottlenecks of traditional pump sources, drive further development of fiber laser technology, and meet market demands for higher power, superior beam quality, and greater reliability.

The 976nm 135/155μm 300W fiber-coupled module based on an on-chip wavelength-stabilized diode chip

Ytterbium-doped fiber lasers generally adopt the 976nm pump wavelength to achieve higher power and better beam quality. However, as fiber lasers are increasingly applied in high-end manufacturing, research, and other advanced fields, stricter performance requirements for pump sources have emerged. The 976nm pump solution has revealed challenges such as narrow absorption peak bandwidth, wavelength drift, and limitations of traditional external cavity VBG wavelength locking methods.

Everbright's 976nm 135/155μm 300W fiber-coupled module, based on an on-chip wavelength-stabilized diode chip, features a unique epitaxial chip design. This enables linear power output across a wide temperature range, ensuring stable performance of the laser under varying environmental conditions.

Wavelength locking across a wide temperature range of >55°C

Measured data shows that the module achieves full-current spectral locking over a wide temperature range of 10°C to 65°C, with a spectral FWHM of <0.4nm. This is accomplished without requiring additional external cavity optical components, effectively reducing product costs and enhancing environmental adaptability.

Low temperature wavelength drift coefficient of 0.07 nm/°C

With a wavelength temperature drift coefficient of 0.07 nm/°C, the pump light spectrum remains within the gain absorption band across a wide temperature range. This ensures stable gain bandwidth, helping the laser output maintain stable single-mode or few-mode operation and improving laser quality.

Low wavelength locking time (<10 ms)

Measured data shows that the time from module light emission to stable wavelength locking is less than 10 ms. This performance ensures rapid response and high-precision control of the laser in practical applications, making it suitable for various demanding laser scenarios.

Chip reliability: 2 batches, 1000 hours without failure!

The grating-integrated chip has passed accelerated life testing for two batches over 1,000 hours with zero failures! The stable grating-integrated chip ensures consistent laser output, reduces downtime caused by grating failures, and guarantees long-term reliable operation of fiber lasers in practical applications.

The launch of this product breaks through the technical bottlenecks of the 976nm pump solution, meeting market demands for higher power, superior beam quality, and greater reliability. Leveraging the company’s complete IDM R&D and mass production platform, Everbright will continue to focus on market needs, developing next-generation products to empower downstream applications with laser technology.