Nd:YAG pumped nanosecond optical parametric oscillator based on LiInSe2 with tunability extending from 4.7 to 8.7 microm.
LiInSe(2) is one of the few (only 5) non-oxide nonlinear optical crystals whose band-gap (2.86 eV) and transparency allowed in the past nanosecond optical parametric oscillation in the mid-IR without two-photon absorption for a pump wavelength of 1064 nm. However, the first such demonstration was limited to the 3.3-3.78 microm range for the idler and the average idler power did not exceed 2.5 mW. Here we report broadly tunable operation, from 4.7 to 8.7 microm, of an OPO based on LiInSe(2), achieving maximum idler pulse energy of 282 microJ at approximately 6.5 microm, at a repetition rate of 100 Hz (approximately 28 mW of average power).
Marchev
Georgi
G
Max-Born-Institute for Nonlinear Optics and Ultrafast Spectroscopy, D-12489 Berlin, Germany.
Tyazhev
Aleksey
A
Vedenyapin
Vitaliy
V
Kolker
Dmitri
D
Yelisseyev
Alexander
A
Lobanov
Sergei
S
Isaenko
Ludmila
L
Zondy
Jean-Jacques
JJ
Petrov
Valentin
V
D000669:Amplifiers, Electronic; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D008027:Light; D008962:Models, Theoretical; D036103:Nanotechnology / Q000295:instrumentation*; D009991:Oscillometry / Q000295:instrumentation*; D012542:Scattering, Radiation