Open AccessAll solid-state 1917 nm deep-UV light source by seventh harmonic generation of an 888 nm pumped, Q-switched 1342 nm Nd:YVO_4 laser with excellent beam quality
Author(s) -
Peter Koch,
J. Bartschke,
Johannes A. L’huillier
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.013648
Subject(s) - materials science , optics , laser , second harmonic generation , neodymium , laser beam quality , lithium borate , lithium triborate , beam (structure) , optoelectronics , wavelength , energy conversion efficiency , crystal (programming language) , laser beams , physics , doping , borate glass , computer science , programming language
In this paper we report on the realization of a deep-UV light source using the 1.3 μm transition of neodymium as pumping wavelength. The 191.7 nm radiation was obtained by generating the seventh harmonic of a high-power Q-switched 1342 nm Nd:YVO4 laser. A cesium lithium borate crystal was used for sum frequency mixing of the sixth harmonic and the fundamental. With a total of four conversion stages, up to 240 mW were achieved, with excellent beam quality at 155 mW (M2 < 1.7) and 190 mW (M2 < 1.9).