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Updated: May 13, 2026

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
Coherent control of GHz resonant modes by an integrated acoustic etalon
Huarui Sun1, Vladimir A Stoica, Max Shtein
1Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2125, USA.
Abstract:
By carefully tuning the thickness of a compliant thin film placed within an acoustic cavity, we achieve coherent control of the cavity's acoustic resonances, analogous to the operation of an optical etalon. This technique is demonstrated using a supported membrane oscillator in which multiple high-frequency harmonic resonances are simultaneously optoexcited by an ultrafast laser. Theoretical and computational methods are used to analyze the selective strengthening or suppression of these resonances by constructive or destructive interference.
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