title: Efficient frequency doubling of 1-W continuous-wave Ti:sapphire laser with a robust high-finesse external cavity.
abstract: 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.
authors.affiliation: Laser Technology Laboratory, RIKEN, The Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. hkumahai@postman.riken.go.jp
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kumagai
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Asakawa
authors.forename: Tetsuaki
authors.initials: T
authors.lastname: Iwane
authors.forename: Katsumi
authors.initials: K
authors.lastname: Midorikawa
authors.forename: Minoru
authors.initials: M
authors.lastname: Obara