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Updated: Mar 8, 2026

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation

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High-efficiency supercontinuum generation in solid thin plates at 0.1 TW level.

Peng He, Yangyang Liu, Kun Zhao

|February 2, 2017

Summary

This summary is machine-generated.

Researchers achieved supercontinuum generation in fused silica using ultrashort Ti:sapphire laser pulses. This resulted in a broadband continuum, compressed to few-cycle pulses with high peak power.

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Last Updated: Mar 8, 2026

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Area of Science:

Optics and Photonics
Laser Physics
Nonlinear Optics

Background:

Supercontinuum generation is crucial for various applications, including spectroscopy and optical coherence tomography.
Solid-state media offer advantages for generating broadband light sources due to their robustness and tunability.

Purpose of the Study:

To experimentally investigate supercontinuum generation in a solid-state medium.
To optimize spectral broadening and suppress unwanted nonlinear effects.
To achieve ultrashort pulse compression and high peak power.

Main Methods:

Utilizing a Ti:sapphire laser system to deliver femtosecond pulses.
Employing a multi-plate fused silica setup to induce nonlinear spectral broadening.
Balancing self-phase modulation (SPM) and self-focusing for optimized performance.
Implementing pulse compression techniques to achieve few-cycle durations.

Main Results:

A supercontinuum spanning from 460 to 950 nm was generated.
The process was driven by self-phase modulation (SPM) and self-steepening.
Optimized SPM and self-focusing balanced spectral broadening and suppressed multiphoton absorption.
Output pulses were compressed to 5.4 fs with 0.68 mJ energy, yielding 0.13 TW peak power.

Conclusions:

Demonstrated efficient supercontinuum generation in fused silica using ultrashort laser pulses.
Achieved significant spectral broadening and pulse compression, resulting in high peak power.
The findings highlight the potential of solid-state media for generating advanced light sources.