Open AccessHigh-energy kHz Yb:KYW dual-crystal regenerative amplifier
Author(s) -
Anne-Laure Calendron,
Hüseyin Çankaya,
Franz X. Kärtner
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.22.024752
Subject(s) - materials science , regenerative amplification , optics , amplifier , laser , crystal (programming language) , fiber bragg grating , fiber amplifier , dielectric , fiber laser , optoelectronics , physics , cmos , computer science , programming language
A highly stable Yb:KYW based dual crystal regenerative amplifier is demonstrated, which generates at 1 kHz 6.5-mJ pulses before and up to 4.7-mJ sub-ps pulses after compression with multilayer-dielectric gratings, respectively. The stretcher is compact and based on chirped-fiber Bragg gratings. In continuous-wave operation, 20 W are extracted with a slope efficiency of 40%. The experimental data are in agreement with detailed simulations of the laser dynamics.