title: LiInSe2 nanosecond optical parametric oscillator.
abstract: Optical parametric oscillation using the new lithium selenoindate nonlinear crystal is reported for what is to our knowledge the first time. A 17 mm long, type II phase-matched sample is pumped by a 10 ns Nd:YAG laser. The minimum pump energy threshold is 3 mJ for a signal-resonant configuration. The signal and idler waves are tunable between 1.47 and 1.57 microm, and 3.3 and 3.78 microm, with a total output energy of 170 microJ corresponding to a 2.4% energy conversion at 8 mJ pump, only limited by the AR coatings damage. With optimized crystal quality and coatings, lithium selenoindate should show superior performance as compared with AgGaS(e)2 crystals, owing to its 4x larger thermal conductivity.
authors.affiliation: Institut National de Métrologie, CNAM, 292 Rue Saint-Martin, F-75003 Paris, France. jjz@nlotechnologies.fr
authors.forename: Jean-Jacques
authors.initials: JJ
authors.lastname: Zondy
authors.forename: Vitaliy
authors.initials: V
authors.lastname: Vedenyapin
authors.forename: Alexander
authors.initials: A
authors.lastname: Yelisseyev
authors.forename: Sergei
authors.initials: S
authors.lastname: Lobanov
authors.forename: Ludmila
authors.initials: L
authors.lastname: Isaenko
authors.forename: Valentin
authors.initials: V
authors.lastname: Petrov