Efficient frequency doubling of 1-W continuous-wave Ti:sapphire laser with a robust high-finesse external cavity.
We demonstrated an intrinsic conversion efficiency of 56% from the input fundamental power to the generated second-harmonic power. The second-harmonic power of 581 mW was obtained from the external cavity with a LiB3O5 crystal through the frequency doubling of a 1.17-W Ti:sapphire laser at 746 nm, when the finesse of the robust external cavity was 260.
Kumagai
Hiroshi
H
Laser Technology Laboratory, RIKEN, The Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. hkumahai@postman.riken.go.jp
Asakawa
Yuichi
Y
Iwane
Tetsuaki
T
Midorikawa
Katsumi
K
Obara
Minoru
M