355 nm-Laser Pumped Hydrogen UV Raman Comb

Ultraviolet (UV) laser sources are of great interest in a large number of applications such as spectroscopy, bio-medicine, gas detection, water and food decontamination to cite a few. Unfortunately, the covering of this range of wavelengths is tedious due to the lack of gain media that combine, compactness, high power levels and emission at wavelengths lower than 300 nm. Hitherto, the existing UV laser sources are usually cumbersome, short-lived and cover a limited number of wavelengths.