Open AccessThermally driven dual-frequency Q-switching of Nd:YGd_2Sc_2Al_2GaO_12 ceramic laser
Author(s) -
G. Alombert-Goget,
A. Brenier,
Y. Guyot,
Alexis Labruyère,
Bernard Fauré,
Vincent Couderc
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.22.010792
Subject(s) - laser , optics , materials science , wavelength , q switching , synchronizing , ceramic , optoelectronics , physics , telecommunications , transmission (telecommunications) , computer science , composite material
Multi-wavelength operation of Q-switched Nd-doped YGd(2)Sc(2)Al(2)GaO(12) garnet ceramic lasers has been investigated. Dual-wavelength emission around ~1.06 µm has been demonstrated both in the actively and passively Q-switched configurations. The ratio of output energy between the two laser wavelengths was driven by the temperature elevation caused by pumping. Passively Q-switched operation yields dual-frequency emission of two unsynchronized laser pulses carried by distinct transverse modes whereas active Q-switched configuration offers the possibility of synchronizing emission at the two wavelengths.