title: High-average-power KTiOAsO4 optical parametric oscillator.
abstract: Using noncritically phase-matched 1-cm(2) -aperture KTiOAsO(4) (KTA) crystals in an optical parametric oscillator (OPO), we have demonstrated a sustained average signal power of 33 W at 1534.7 nm. To our knowledge, this is the highest-average-power signal ever generated by an OPO. The pump source was a 100-Hz Q -switched 1064-nm Nd:YAG laser. Compared with that of the similar and more-common material KTiOPO>(4) , idler absorption in KTA is negligible, allowing high-power operation with minimal thermally induced refractive distortion in the OPO crystal.
authors: Research Division, SEO Boston, Schwartz Electro-Optics Inc., 135 South Road, Bedford, Massachusetts 01730, USA.
authors: M S
authors: MS
authors: Webb
authors: P F
authors: PF
authors: Moulton
authors: J J
authors: JJ
authors: Kasinski
authors: R L
authors: RL
authors: Burnham
authors: G
authors: G
authors: Loiacono
authors: R
authors: R
authors: Stolzenberger