Open AccessIntracavity KTP-based OPO pumped by a dual-loss modulated, simultaneously Q-switched and mode-locked Nd:GGG laser
Author(s) -
Hongwei Chu,
Shengzhi Zhao,
Kejian Yang,
Jia Zhao,
Yufei Li,
Dechun Li,
Guiqiu Li,
Tao Li,
Wenchao Qiao
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.22.026925
Subject(s) - optics , materials science , optical parametric oscillator , laser , pulse duration , q switching , mode locking , envelope (radar) , saturable absorption , fiber laser , physics , telecommunications , radar , computer science
An intracavity KTiOPO(4) (KTP) optical parametric oscillator (OPO) pumped by a simultaneously Q-switched and mode-locked (QML) Nd:Gd(3)Ga(5)O(12) (Nd:GGG) laser with an acousto-optic modulator (AOM) and a Cr(4+):YAG saturable absorber is presented. A minimum mode-locking pulse duration underneath the Q-switched envelope was evaluated to be about 290 ps. A maximum QML output power of 82 mW at the signal wavelength of 1570 nm was achieved, corresponding to a maximum mode-locked pulse energy of about 5.12 μJ. The M(2) values were measured to be about 1.3 and 1.5 for tangential and sagittal directions using knife-edge technique.