Open AccessSingle-longitudinal-mode operation of a 1 W combined actively and passively Q-switched Cr,Nd:YAG laser
Author(s) -
Xuejun Wang,
Xu Zhang
Publication year - 2005
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.006693
Subject(s) - laser linewidth , optics , laser , materials science , jitter , fiber laser , q switching , longitudinal mode , pulse duration , diode , pulse width modulation , injection seeder , laser pumping , power (physics) , optoelectronics , physics , telecommunications , quantum mechanics , computer science
We present a combined actively and passively Q-switched single-frequency laser that uses a codoped Cr4+,Nd3+:YAG crystal and an acousto-optic Q switch. At a maximum of 8.6 W absorbed pump power of fiber-coupled laser-diode arrays, the laser produces pulses of 1036 mW average power with a pulse duration of 8.31 ns at a repetition rate of 7.10 kHz. The output is a stable single longitudinal mode with a linewidth of 530 MHz and an interpulse timing jitter of 0.40 micros. We compare the laser with and without the Cr4+ as well as with and without an active Q switch.