Subpicosecond thin-disk laser oscillator with pulse energies of up to 25.9 microjoules by use of an active multipass geometry.
The pulse shaping dynamics of a diode-pumped laser oscillator with active multipass cell was studied experimentally and numerically. We demonstrate the generation of high energy subpicosecond pulses with a pulse energy of up to 25.9 microJ at a pulse duration of 928 fs directly from a thin-disk laser oscillator. These results are achieved by employing a selfimaging active multipass geometry operated in ambient atmosphere. Stable single pulse operation has been obtained with an average output power in excess of 76 W and at a repetition rate of 2.93 MHz. Self starting passive mode locking was accomplished using a semiconductor saturable absorber mirror. The experimental results are compared with numerical simulations, showing good agreement including the appearance of Kelly sidebands. Furthermore, a modified soliton-area theorem for approximating the pulse duration is presented.
Neuhaus
Joerg
J
Department of Physics and Center of Applied Photonics, University of Konstanz, 78457 Konstanz, Germany. joerg.neuhaus@uni-konstanz.de
Bauer
Dominik
D
Zhang
Jing
J
Killi
Alexander
A
Kleinbauer
Jochen
J
Kumkar
Malte
M
Weiler
Sascha
S
Guina
Mircea
M
Sutter
Dirk H
DH
Dekorsy
Thomas
T
D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D053844:Lasers, Solid-State; D008027:Light; D008962:Models, Theoretical; D009991:Oscillometry / Q000295:instrumentation*; D012542:Scattering, Radiation