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Related Experiment Video

Updated: Jun 24, 2026

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators

Published on: April 4, 2016

Silicon-waveguide-coupled high-Q chalcogenide microspheres.

Daniel H Broaddus¹, Mark A Foster, Imad H Agha

¹School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853, USA. dhb29@cornell.edu

|April 15, 2009

Summary

This summary is machine-generated.

High-quality arsenic triselenide glass microspheres were fabricated for optical applications. However, thermal instability at higher powers limits their use in nonlinear optics.

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Last Updated: Jun 24, 2026

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Area of Science:

Materials Science
Optical Engineering
Nanotechnology

Background:

Microspheres are crucial for optical resonators.
Arsenic triselenide glass offers unique optical properties.
Efficient light coupling is essential for microsphere applications.

Purpose of the Study:

To fabricate high-Q arsenic triselenide glass microspheres.
To achieve efficient light coupling into these microspheres.
To investigate the thermal stability of the microspheres.

Main Methods:

Fabrication using a three-step resistive heating process.
Demonstration of quality factors exceeding 2 x 10^6 at 1550 nm.
Utilizing index-engineered unclad silicon nanowires for efficient coupling.

Main Results:

Achieved high-Q factor ( > 2 x 10^6) arsenic triselenide glass microspheres.
Demonstrated efficient coupling using novel silicon nanowire scheme.
Observed thermal instability at optical powers above 1 mW.

Conclusions:

High-Q arsenic triselenide glass microspheres can be fabricated.
Efficient coupling is feasible with engineered silicon nanowires.
Thermal instability limits applications in high-power nonlinear optics.