Ultraviolet laser light generation device

Abstract

The present invention relates to a 399.08-nm wavelength ultraviolet laser light generating device, comprising: an excitation light source part for converting a 1064.2-nm laser light to a second harmonic, and generating a 532.1-nm laser light; an optical parametric oscillating part for generating a 798.15-nm signal light and a 1596.3-nm idler light using the 532.1-nm laser light; a first wavelength converting part for generating a 399.08-nm light by sum frequency generation of the 1596.3 nm idler light and a 532.1-nm light; and a second wavelength converting part for generating a 399.08-nm light of a second harmonic from the 798.15-nm signal light. The order of the first wavelength converting part and the second wavelength converting part is random. The present invention relates to a 228.04-nm wavelength ultraviolet laser light generating device comprising the 399.08-nm wavelength laser light generating device and a third wavelength converting part for subjecting a 399.08-nm light and a 532.1-nm light to sum frequency generation, and generating a 228.04-nm light. The present invention provides a simple device of generating a 228.04-nm laser light which is a deep ultraviolet ray in high efficiency and a simple 399.08-nm ultraviolet laser light generating device usable as a light source thereof.