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Related Experiment Video

Updated: Jun 1, 2026

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis
07:55

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

Published on: September 22, 2017

On-chip stimulated Brillouin scattering.

Ravi Pant1, Christopher G Poulton, Duk-Yong Choi

  • 1Institute of Photonics and Optical Sciences (IPOS), School of Physics, University of Sydney, NSW 2006, Australia. rpant@physics.usyd.edu.au

Optics Express
|June 7, 2011
PubMed
Summary

We demonstrate on-chip stimulated Brillouin scattering (SBS) in chalcogenide waveguides. This research achieves 16 dB probe gain, paving the way for integrated photonic devices.

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Area of Science:

  • Photonics
  • Materials Science
  • Optics

Background:

  • Stimulated Brillouin scattering (SBS) is a nonlinear optical process with applications in signal processing and sensing.
  • Chalcogenide materials offer unique nonlinear optical properties suitable for integrated photonics.

Purpose of the Study:

  • To demonstrate on-chip stimulated Brillouin scattering (SBS) in an As2S3 chalcogenide rib waveguide.
  • To characterize the SBS process and quantify key parameters like Brillouin shift, linewidth, and gain coefficient.

Main Methods:

  • Fabrication of a cm-long As2S3 chalcogenide rib waveguide with a 4 μm x 850 nm cross-section.
  • Characterization using the backscattered signal and a pump-probe technique.
  • Analysis of probe vs. pump power at the Brillouin shift for gain coefficient determination.

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High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
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High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

Published on: December 22, 2015

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Last Updated: Jun 1, 2026

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis
07:55

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

Published on: September 22, 2017

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
13:31

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

Published on: December 22, 2015

Main Results:

  • Measured Brillouin shift of ~7.7 GHz and FWHM linewidth of 34 MHz.
  • Calculated Brillouin gain coefficient of 0.715 x 10⁻⁹ m/W.
  • Achieved a probe gain of 16 dB with approximately 300 mW of continuous-wave pump power.

Conclusions:

  • Successful demonstration of on-chip SBS in As2S3 chalcogenide waveguides.
  • The results highlight the potential of these materials for integrated photonic applications requiring high optical gain.
  • Further research can explore optimizing waveguide design and material composition for enhanced SBS performance.