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Updated: Aug 9, 2026
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In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
Published on: May 27, 2013
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Multi-octave mid-infrared supercontinuum generation in tapered chalcogenide-glass rods
Optics Letters
|November 1, 2023
Summary
We developed short-tapered chalcogenide-glass rods for mid-infrared supercontinuum generation. These rods demonstrate multi-octave spectral broadening, advancing infrared fiber supercontinuum sources.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Mid-infrared supercontinuum generation is crucial for various spectroscopic applications.
- Chalcogenide glasses offer unique nonlinear optical properties for infrared applications.
- Developing efficient and robust supercontinuum sources in the mid-infrared remains a challenge.
Purpose of the Study:
- To experimentally develop short-tapered chalcogenide-glass rods for mid-infrared supercontinuum generation.
- To demonstrate multi-octave spectral broadening of femtosecond laser pulses using these novel rods.
Main Methods:
- Fabrication of tapered chalcogenide-glass rods (Ge20Se70Te10).
- Characterization of spectral broadening of femtosecond laser pulses.
- Utilized a 5-cm-long rod with a 25 µm waist diameter.
Main Results:
- Achieved multi-octave spectral broadening from 1.6 to 15.6 µm.
- Demonstrated supercontinuum generation in a tapered Ge20Se70Te10 rod.
- Observed significant spectral coverage despite the multimode nature of the waveguide.
Conclusions:
- Short-tapered chalcogenide-glass rods are promising for mid-infrared supercontinuum generation.
- These simple post-processed rods offer potential for improved coupling efficiency, spectral coverage, and output power.
- This work advances the development of fiber supercontinuum sources utilizing infrared glasses.
