High-power femtosecond fiber-feedback optical parametric oscillator based on periodically poled stoichiometric LiTaO3.
We demonstrate a synchronously pumped high-gain optical parametric oscillator with feedback through a fiber, using a passively mode-locked Yb:YAG thin-disk laser as a pump source. We obtain as much as 19-W average signal power at a wavelength of 1.45 microm in 840-fs pulses and 7.8 W of idler power at 3.57 microm. The repetition rate of the pulses is 56 MHz, and the transverse beam quality of the generated signal is M2 < 1.6.
Südmeyer
T
T
Ultrafast Laser Physics, Swiss Federal Institute of Technology, ETH Hönggerberg-HPT, CH-8093 Zurich, Switzerland.
Innerhofer
E
E
Brunner
F
F
Paschotta
R
R
Usami
T
T
Ito
H
H
Kurimura
S
S
Kitamura
K
K
Hanna
D C
DC
Keller
U
U