Compact, highly efficient and rugged UV source based on fiber laser

摘要

A tunable highly efficient and high power ultraviolet (UV) laser source with good spatial beam quality is disclosed. A plurality of laser lights are generated by ytterbium (Yb) doped fiber laser and erbium/ytterbium (Er/Yb) doped fiber laser. In order to achieve a desired UV wavelength, the Yb-doped and Er/Yb-doped fiber lasers are tuned to generate laser lights of certain wavelengths based on a desired UV light wavelength. The laser lights from the Er/Yb-doped fiber laser and the Yb-doped fiber laser are frequency-doubled. The frequency-doubled laser lights are non-linearly frequency-mixed to generate a UV light with the desired wavelength.