Laser Diodes & Sources

Narrow Linewidth Semiconductor Lasers

The NLLD narrow-linewidth tunable fiber-coupled laser features a <10 kHz spectral linewidth with wavelength tunability, utilizing a semiconductor gain chip and an external tunable silicon waveguide cavity for superior performance. With an ultra-long coherence length (~100 km), it enables high-precision interferometric and long fiber sensing while its low spectral noise enhances SNR for detecting weak signals in interferometry and backscatter-based sensing. Its low phase noise and high stability make it ideal for atomic clocks, quantum sensing, gravimeters, fiber optic gyroscopes (FOGs), LiDAR, and Doppler velocimetry, while minimal frequency drift ensures long-term measurement stability. Integrated driving electronics allow precise output power and wavelength control, making it a highly reliable solution for cutting-edge scientific and industrial applications.