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Second-harmonic generation and self-phase modulation of few-cycle mid-infrared pulses

Second-harmonic generation and self-phase modulation of few-cycle mid-infrared pulses

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CHEN, Bo-Han, Christina HOFER, Ioachim PUPEZA, Peter BAUM, 2019. Second-harmonic generation and self-phase modulation of few-cycle mid-infrared pulses. In: Optics letters. 44(16), pp. 4079-4082. ISSN 0146-9592. eISSN 1539-4794. Available under: doi: 10.1364/OL.44.004079

@article{Chen2019-08-15Secon-47020, title={Second-harmonic generation and self-phase modulation of few-cycle mid-infrared pulses}, year={2019}, doi={10.1364/OL.44.004079}, number={16}, volume={44}, issn={0146-9592}, journal={Optics letters}, pages={4079--4082}, author={Chen, Bo-Han and Hofer, Christina and Pupeza, Ioachim and Baum, Peter} }

2019-08-15 Baum, Peter Baum, Peter 2019-09-24T14:27:47Z 2019-09-24T14:27:47Z Chen, Bo-Han eng Chen, Bo-Han Pupeza, Ioachim Near-single-cycle mid-infrared pulses with a spectrum covering 5.4-11 μm are efficiently frequency-doubled in different GaSe crystals. The second-harmonic spectrum spans 3-4.3 μm at a power conversion efficiency of >20%. We measure an effective nonlinear coefficient of deff≈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. Second-harmonic generation and self-phase modulation of few-cycle mid-infrared pulses Hofer, Christina Hofer, Christina terms-of-use Pupeza, Ioachim

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