GaAs micro-nanodisks probed by a looped fiber taper for optomechanics applications

L. Ding; P. Senellart; A. Lemaitre; S. Ducci; G. Leo; I. Favero

doi:10.1117/12.853985

10 May 2010 GaAs micro-nanodisks probed by a looped fiber taper for optomechanics applications

L. Ding, P. Senellart, A. Lemaitre, S. Ducci, G. Leo, I. Favero

Proceedings Volume 7712, Nanophotonics III; 771211 (2010) https://doi.org/10.1117/12.853985
Event: SPIE Photonics Europe, 2010, Brussels, Belgium

Abstract

GaAs micro-nanodisks (typical disk size 5 μm × 200 nm in our work) are good candidates for boosting optomechanical phenomena thanks to their ability to confine both optical and mechanical energy in a sub-micron interaction volume. We present results of optomechanical characterization of GaAs disks by near-field optical coupling from a tapered silica nano-waveguide. Whispering gallery modes with optical Q factor up to a few 10⁵ are observed. Critical coupling, optical resonance doublet splitting and mode identification are discussed. We eventually show an optomechanical phenomenon of optical force attraction of the silica taper to the disk. This phenomenon shows that mechanical and optical degrees of freedom naturally couple at the micro-nanoscale.

Citation Download Citation

L. Ding, P. Senellart, A. Lemaitre, S. Ducci, G. Leo, and I. Favero "GaAs micro-nanodisks probed by a looped fiber taper for optomechanics applications", Proc. SPIE 7712, Nanophotonics III, 771211 (10 May 2010); https://doi.org/10.1117/12.853985

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