25 September 2009 Broadly tunable LiInSe2 optical parametric oscillator pumped by a Nd:YAG laser
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Abstract
LiInSe2 is one of the few (in the meanwhile 6) non-oxide nonlinear crystals whose band-gap (2.86 eV) and transparency enabled 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 3.34-3.82 μm spectral range with a maximum idler energy of 92 μJ at 3.457 μm for a repetition rate of 10 Hz. Now we achieved broadly tunable operation, from 4.65 to 7.5 μm, with a single crystal, reaching maximum idler pulse energy of 282 μJ at 6.514 μm, at a repetition rate of 100 Hz (~28 mW of average power).
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Georgi Marchev, Georgi Marchev, Aleksey Tyazhev, Aleksey Tyazhev, Vitaliy Vedenyapin, Vitaliy Vedenyapin, Dmitri Kolker, Dmitri Kolker, Alexander Yelisseyev, Alexander Yelisseyev, Sergei Lobanov, Sergei Lobanov, Ludmila Isaenko, Ludmila Isaenko, Jean-Jacques Zondy, Jean-Jacques Zondy, Valentin Petrov, Valentin Petrov, } "Broadly tunable LiInSe2 optical parametric oscillator pumped by a Nd:YAG laser", Proc. SPIE 7487, Optical Materials in Defence Systems Technology VI, 74870F (25 September 2009); doi: 10.1117/12.830238; https://doi.org/10.1117/12.830238
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