Optical parametric generation of femtosecond pulses up to 9 μm with LiInS[sub 2] pumped at 800 nm

Rotermund, F.; Petrov, V.; Noack, F.; Isaenko, L.; Yelisseyev, A.; Lobanov, S.
April 2001
Applied Physics Letters;4/30/2001, Vol. 78 Issue 18, p2623
Academic Journal
We demonstrate direct access to the 4.8-9 μm spectral region with 800 nm, 1 kHz pumping of a femtosecond optical parametric amplifier based on the wide-gap wurtzite-type LiInS[sub 2]. LiInS[sub 2] did not exhibit two-photon absorption at 800 nm and seems applicable at this pump wavelength with intensities of the order of 100 GW/cm[sup 2] for down-conversion of high energy ultrashort pulses up to its mid-IR edge at approx. 12 μm. © 2001 American Institute of Physics.


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