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Updated: Apr 20, 2026
12:21
Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators
Published on: April 4, 2016
11.8K
Stokes suppression and supercontinuum generation by differential two-phonon excitation
Optics Express
|November 18, 2014
Summary
Researchers demonstrated stimulated Raman scattering by coupling phonon modes, generating numerous sidebands and a supercontinuum. This novel approach suppressed conventional Raman scattering lines.
Area of Science:
- Condensed Matter Physics
- Nonlinear Optics
Background:
- Stimulated Raman scattering (SRS) is a crucial nonlinear optical process.
- Controlling phonon modes is key to manipulating SRS.
- Previous methods often lack efficient phonon coupling.
Purpose of the Study:
- To demonstrate a new method for SRS.
- To achieve strong coherent coupling of phonon modes.
- To generate broad supercontinuum emission via SRS.
Main Methods:
- Utilizing two-phonon excitation at the Brillouin zone boundary.
- Employing external fields for coherent phonon coupling.
- Analyzing sideband generation and spectral broadening.
Main Results:
- Successfully demonstrated SRS driven by differential coupling of two phonon modes.
- Observed up to 11th order sidebands.
- Generated a supercontinuum covering the entire visible spectrum.
- Significantly suppressed original Stokes and anti-Stokes lines from single-phonon SRS.
Conclusions:
- Coherent coupling of phonon modes offers a powerful route to control SRS.
- This technique enables efficient generation of broadband light.
- Potential applications in spectroscopy and optical communications.
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