Efficient femtosecond high power Yb:Lu(2)O(3) thin disk laser.
We demonstrate the first passively mode-locked thin disk laser based on Yb:Lu(2)O(3). The laser generates 370-fs pulses with 20.5 W of average power in a diffraction-limited beam (M(2) < 1.1). The nearly transform-limited pulses have a spectral bandwidth of 3.4 nm centered near 1034 nm. With slightly longer pulses (523 fs) we obtained 24 W of average power at a pump power of 56 W, resulting in an optical-to-optical efficiency of 43%, which is higher than for any previously mode-locked thin disk laser.
Marchese
S V
SV
Baer
C R E
CR
Peters
R
R
Kränkel
C
C
Engqvist
A G
AG
Golling
M
M
Maas
D J H C
DJ
Petermann
K
K
Südmeyer
T
T
Huber
G
G
Keller
U
U