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Efficient middle-infrared generation in LiGaS<sub>2</sub> by simultaneous spectral broadening and difference-frequency generation

Efficient middle-infrared generation in LiGaS2 by simultaneous spectral broadening and difference-frequency generation

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CHEN, Bo-Han, Tamás NAGY, Peter BAUM, 2018. Efficient middle-infrared generation in LiGaS2 by simultaneous spectral broadening and difference-frequency generation. In: Optics Letters. 43(8), pp. 1742-1745. ISSN 0146-9592. eISSN 1539-4794. Available under: doi: 10.1364/OL.43.001742

@article{Chen2018-04-15Effic-43223, title={Efficient middle-infrared generation in LiGaS2 by simultaneous spectral broadening and difference-frequency generation}, year={2018}, doi={10.1364/OL.43.001742}, number={8}, volume={43}, issn={0146-9592}, journal={Optics Letters}, pages={1742--1745}, author={Chen, Bo-Han and Nagy, Tamás and Baum, Peter} }

2018-09-11T10:21:49Z Nagy, Tamás Chen, Bo-Han 2018-04-15 Baum, Peter Chen, Bo-Han Nagy, Tamás 2018-09-11T10:21:49Z We report a surprisingly broadband and efficient midinfrared pulse generation in LiGaS<sub>2 </sub>(Langasite, LGS) by invoking a simultaneous interplay of intrapulse difference-frequency generation, self-phase modulation, and dispersion. This cascaded mechanism expands the output bandwidth and output power at the same time. With 30-fs driving pulses centered at 1030-nm wavelength we obtain a broadband middle-infrared spectrum of 8-11 μm with an LGS crystal as thick as 4 mm, which is eight times longer than the walk-off length. eng Baum, Peter Efficient middle-infrared generation in LiGaS<sub>2</sub> by simultaneous spectral broadening and difference-frequency generation

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