Affiliation:
1. Shandong Institute of Metrology
Abstract
An efficient all-solid-state ultraviolet laser at 294.5 nm
is demonstrated based on the
stimulated Raman scattering and two stages of second-harmonic
generation. With a three-mirror cavity, a 2.63 W laser at
589.6 nm with a pulse width of ∼8.5ns and a pulse repetition frequency of
20 kHz is obtained. Employing a BBO crystal as the
frequency-doubled medium, a 332 mW UV beam at 294.5 nm
with a pulse width of ∼5.8ns is obtained under an incident pump
power of 14.12 W; the corresponding conversion efficiency is
2.4% from 808 to 294.5 nm.
Funder
National Natural Science Foundation of
China
Key Research Program of Shandong
Province
Taishan Scholars Program of Shandong
Province