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Updated: Feb 11, 2026
09:39
In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
Published on: May 27, 2013
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Efficient middle-infrared generation in LiGaS2 by simultaneous spectral broadening and difference-frequency
Optics Letters
|April 14, 2018
Abstract:
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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