Ultra-narrow bandwidth OPS laser in the green-yellow wavelength range for Raman spectroscopy

Optically pumped semiconductor lasers are scalable up to several 10ths of Watts of output power, maintaining excellent beam quality and high reliability. A further key advantage of the OPS technology is wavelength flexibility: the accessible wavelength range spans from 915 nm to 1180 nm. Frequency doubling expands this into the blue to yellow spectral range. The current investigation aims at applications (such as Raman spectroscopy) where ultra-narrow bandwidth lasers are required. Results of a single frequency green-yellow OPS laser will be presented.