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

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2018

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Nagy, Tamás

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https://doi.org/10.1364/OL.43.001742
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Optics Letters. 2018, 43(8), pp. 1742-1745. ISSN 0146-9592. eISSN 1539-4794. Available under: doi: 10.1364/OL.43.001742

Zusammenfassung

We report a surprisingly broadband and efficient midinfrared pulse generation in LiGaS2 (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.

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ISO 690CHEN, Bo-Han, Tamás NAGY, Peter BAUM, 2018. Efficient middle-infrared generation in LiGaS2 by simultaneous spectral broadening and difference-frequency generation. In: Optics Letters. 2018, 43(8), pp. 1742-1745. ISSN 0146-9592. eISSN 1539-4794. Available under: doi: 10.1364/OL.43.001742
BibTex
@article{Chen2018-04-15Effic-43223,
  year={2018},
  doi={10.1364/OL.43.001742},
  title={Efficient middle-infrared generation in LiGaS<sub>2</sub> by simultaneous spectral broadening and difference-frequency generation},
  number={8},
  volume={43},
  issn={0146-9592},
  journal={Optics Letters},
  pages={1742--1745},
  author={Chen, Bo-Han and Nagy, Tamás and Baum, Peter}
}
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