Open AccessHigh-power actively Q-switched single-mode 1342 nm Nd:YVO_4 ring laser, injection-locked by a cw single-frequency microchip laser
Author(s) -
Peter Koch,
J. Bartschke,
Johannes A. L’huillier
Publication year - 2015
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.031357
Subject(s) - laser , optics , materials science , ring laser , laser beam quality , pulse duration , q switching , injection seeder , continuous wave , laser power scaling , pulse (music) , optoelectronics , physics , laser beams , detector
In this paper we report on the realization of a single-mode Q-switched Nd:YVO 4 ring laser at 1342 nm. Unidirectional and single-mode operation of the ring laser is achieved by injection-locking with a continuous wave Nd:YVO 4 microchip laser, emitting a single-frequency power of up to 40 mW. The ring laser provides a single-mode power of 13.9 W at 10 kHz pulse repetition frequency with a pulse duration of 18.2 ns and an excellent beam quality (M 2 < 1.05). By frequency doubling of the fundamental 1342 nm laser, a power of 8.7 W at 671 nm with a pulse duration of 14.8 ns and a beam propagation factor of M 2 < 1.1 is obtained. The 671 nm radiation features a long-term spectral width of 75 MHz.