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Tunable coupling of mechanical vibration in GaAs micro-resonators

✍ Scribed by Hajime Okamoto; Takehito Kamada; Koji Onomitsu; Imran Mahboob; Hiroshi Yamaguchi

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
566 KB
Volume
42
Category
Article
ISSN
1386-9477

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✦ Synopsis

Control of the vibrational coupling in two mechanically coupled GaAs micro-resonators is demonstrated. The coupling efficiency depends on the eigenfrequency difference between the resonators. While the fabrication results in the eigenfrequency difference of $ 1% due to the patterning error, frequency modulation by the laser irradiation via the photothermal effect can compensate for the initial difference and realize perfect tuning. The two coupled vibrational modes exhibit the avoided crossing with the adjustment of the laser power, indicating the tunable coupling in the micromechanical system.

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