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Updated: Jul 14, 2026
09:10
Fabrication and Testing of Microfluidic Optomechanical Oscillators
Published on: May 29, 2014
Observation of optical spring effect in a microtoroidal optomechanical resonator
Mani Hossein-Zadeh1, Kerry J Vahala
1Department of Applied Physics, California Institute of Technology, Pasadena 91125, USA. mhz@caltech.edu
Optics Letters
|June 19, 2007
Summary
We demonstrate the optical spring effect in silica microtoroid resonators. This phenomenon, driven by radiation pressure, alters mechanical resonant frequency with optical power and tuning.
Area of Science:
- Optics
- Nanotechnology
- Mechanical Engineering
Background:
- Optical spring effect is a phenomenon where light pressure alters mechanical properties of a resonator.
- Silica microtoroid resonators are key components in integrated photonics and sensing applications.
- Understanding radiation-pressure-induced effects is crucial for designing stable optical systems.
Purpose of the Study:
- To experimentally verify the optical spring effect in silica microtoroid resonators.
- To investigate the influence of optical power, coupling, and detuning on mechanical resonance.
- To validate a theoretical model describing radiation-pressure-induced rigidity.
Main Methods:
- Fabrication of silica microtoroid resonators.
- Precise measurement of mechanical resonant frequency.
- Systematic variation of optical power, coupling, and detuning.
- Comparison of experimental data with theoretical predictions.
Main Results:
- Experimental evidence for the optical spring effect was successfully obtained.
- Observed variations in mechanical resonant frequency showed strong agreement with optical power, coupling, and detuning.
- The results validated the theoretical model for radiation-pressure-induced rigidity.
Conclusions:
- The optical spring effect is confirmed in silica microtoroid resonators.
- Radiation pressure significantly influences the mechanical behavior of these resonators.
- The findings support the use of microtoroids in applications sensitive to optical-mechanical interactions.
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