67â
mJ, 137â
ns narrow bandwidth 355â
nm UV laser.
Opt Lett
; 48(21): 5599-5602, 2023 Nov 01.
Article
em En
| MEDLINE
| ID: mdl-37910712
ABSTRACT
A high-efficiency, high-energy, narrow bandwidth, hundred-nanosecond pulse width 355â
nm ultraviolet (UV) laser was realized. A high-energy single-frequency 1064â
nm fundamental laser was demonstrated firstly with multistage end-pumped preamplifiers and side-pumped main amplifiers. The corresponding pulse energy, repetition rate, pulse duration, bandwidth, and beam quality factor M2 were determined to be 221â
mJ, 100â
Hz, 156â
ns, 2.25â
MHz, and 1.23, respectively. By using type-I phase-matching LBO crystal for second harmonic generation (SHG) and type-II phase-matching LBO crystal for the sum frequency generation of the third harmonic, 67â
mJ, a narrow bandwidth 355â
nm UV laser was obtained with a pulse width of 137â
ns and an energy stability of RMS < 1.2%@2â
h. The fundamental to UV optical conversion efficiency was 30.3%. Our results provided a new way for generating high-energy, narrow bandwidth hundred-nanosecond 355â
nm UV lasers used for direct-detection Doppler wind lidar (DWL) system.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Opt Lett
Ano de publicação:
2023
Tipo de documento:
Article