Laser Diodes & Sources

690nm Multimode Fiber Coupled Diode Laser

The NLML Series Narrowline Multimode Fiber-Coupled Diode Laser is designed for high-stability performance, delivering high-power laser output with a narrow spectral linewidth through a multimode fiber. It incorporates a volume Bragg grating (VBG) phase element within the laser cavity to achieve precise wavelength locking, excellent wavelength stability with minimal temperature dependence, a linewidth below 0.07 nm, and a high side-mode suppression ratio (SMSR). An integrated power monitor and thermoelectric (TEC) cooler ensure reliable and stable output in both power and wavelength. This makes the NLML series ideal for demanding applications requiring narrow linewidth, precise wavelength control, and stable high-power output — such as Raman spectroscopy and advanced sensing systems.