Difference-frequency generation of intense femtosecond pulses in the mid-IR (4-12 mu m) using HgGa2S4 and AgGaS2

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We compare the properties and the performance of HgGa2S4 and AgGaS2 in a high-power difference-frequency generation scheme mixing the signal and idler from a travelling wave optical parametric generator at 1 kHz. Femtosecond pulses from 3.7 to 12 mum with quantum efficiency of 40-80% are generated with HgGa2S4 which is about 1.2 times higher than with AgGaS2 typically used in that wavelength range. The maximum single pulse energy obtained exceeds 9 muJ near 4 mum and 1 muJ in the whole tunability range which represents about an order of magnitude improvement in comparison with previous results. The mid-infrared pulses are almost bandwidth limited with durations of the order of 200 fs and less (minimum 165 fs). (C) 2000 Elsevier Science B.V. All rights reserved
Publisher
ELSEVIER SCIENCE BV
Issue Date
2000-11
Language
English
Article Type
Article
Keywords

REPETITION-RATE

Citation

OPTICS COMMUNICATIONS, v.185, no.1-3, pp.177 - 183

ISSN
0030-4018
DOI
10.1016/S0030-4018(00)00987-1
URI
http://hdl.handle.net/10203/212792
Appears in Collection
PH-Journal Papers(저널논문)
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