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Updated: May 24, 2026

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

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

Published on: May 27, 2013

Combined frequency conversion and pulse compression in nonlinear tapered waveguides.

Alexander S Solntsev¹, Andrey A Sukhorukov

¹Nonlinear Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200, Australia. sun124@physics.anu.edu.au

|February 21, 2012

Summary

This summary is machine-generated.

We propose using tapered waveguides and four-wave mixing to generate tunable ultrashort pulses. This method achieves strong pulse compression despite dispersion, ideal for efficient nonlinear frequency conversion.

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Area of Science:

Nonlinear optics
Waveguide optics
Ultrafast photonics

Background:

Four-wave mixing (FWM) is a key nonlinear optical process.
Generating tunable ultrashort pulses is crucial for various applications.
Waveguide platforms offer enhanced light-matter interaction for nonlinear processes.

Purpose of the Study:

To propose a novel application of pump-degenerate four-wave mixing in tapered waveguides.
To achieve tunable ultrashort pulse generation with high frequency conversion efficiency.
To overcome limitations like group-velocity mismatch and dispersion in pulse generation.

Main Methods:

Utilizing a pump-degenerate four-wave mixing process.
Employing tapered waveguides to confine and enhance nonlinear interactions.
Investigating the generation of frequency-converted pulses from chirped pump pulses.

Main Results:

Generation of strongly compressed frequency-converted pulses.
Tunability of the central frequency over the material transparency range.
Effective operation with strongly chirped pump pulses, enabling longer nonlinear media.
Robustness against group-velocity mismatch and group-velocity dispersion.

Conclusions:

The proposed method offers an efficient way to generate tunable ultrashort pulses.
Tapered waveguides enhance the performance of four-wave mixing for pulse generation.
The technique's tolerance for chirped pump pulses and dispersion broadens its applicability.