Few-cycle mid-infrared pulses from BaGa2GeSe6.
Opt Lett
; 45(13): 3813-3815, 2020 Jul 01.
Article
en En
| MEDLINE
| ID: mdl-32630961
BaGa2GeSe6 (BGGSe) is a newly developed nonlinear material that is attractive for ultrabroad frequency mixing and ultrashort pulse generation due to its comparably low dispersion and high damage threshold. A numerical study shows the material's capacity for octave-spanning mid-infrared pulse generation up to 18 µm. In a first experiment, we show that a long crystal length of 2.6 mm yields a pulse energy of 21 pJ at 100 MHz with a spectral bandwidth covering 5.8 to 8.5 µm. The electric field of the carrier-envelope-phase stable pulse is directly measured with electro-optical sampling and reveals a pulse duration of 91 fs, which corresponds to sub-four optical cycles, thus confirming some of the prospects of the material for ultrashort pulse generation and mid-infrared spectroscopy.
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01-internacional
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MEDLINE
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En
Revista:
Opt Lett
Año:
2020
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Article
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Estados Unidos