Abstract
Near-single-cycle mid-infrared pulses with a spectrum covering 5.4-11 mu mare efficiently frequency-doubled in different GaSe crystals. The second-harmonic spectrum spans 3-4.3 mu m at a power conversion efficiency of >20%. We measure an effective nonlinear coefficient of d(eff) approximate to 35 pm/V. We also report on self-phase modulation and spectral broadening of the mid-infrared pulses in various bulk materials and find an increase of 45% of spectral width for 5 mm of Ge. These results demonstrate that nonlinear optical conversions can efficiently be driven by few-cycle mid-infrared radiation. (C) 2019 Optical Society of America.
Item Type: | Journal article |
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Faculties: | Physics |
Subjects: | 500 Science > 530 Physics |
ISSN: | 0146-9592 |
Language: | English |
Item ID: | 82692 |
Date Deposited: | 15. Dec 2021, 15:02 |
Last Modified: | 15. Dec 2021, 15:02 |