Related Experiment Video
Updated: Jun 3, 2026

Fabrication and Testing of Microfluidic Optomechanical Oscillators
Published on: May 29, 2014
Vibration amplification, damping, and self-oscillations in micromechanical resonators induced by optomechanical
Hajime Okamoto1, Daisuke Ito, Koji Onomitsu
1NTT Basic Research Laboratories, Nippon Telegraph and Telephone Corporation, Atsugi, Kanagawa 243-0198, Japan. hajime@nttbrl.jp
Abstract:
Carrier-induced dynamic backaction in micromechanical resonators is demonstrated. Thermal vibration of an n-GaAs/i-GaAs bilayer cantilever is amplified by optical band-gap excitation, and for the excitation power above a critical value, self-oscillations are induced. These phenomena are found in the [1[over ¯]10]-oriented cantilever, whereas the damping (deamplification) is observed in the [1[over ¯]10] orientation. This optomechanical coupling does not require any optical cavities but is instead based on the piezoelectric effect that is generated by photoinduced carriers.
Related Concept Videos
Concept of Resonance and its Characteristics
Forced Oscillations
Sound Waves: Resonance
Damped Oscillations
Although friction and other non-conservative...
Types of Damping
Design Example: Underdamped Parallel RLC Circuit
Starting with a fixed...

