A cavity optomechanical platform for GHz phonon amplification via Anderson-localized optical modes

Ryan C. Ng; Guillermo Arregui; Guilhem Madiot; Marcus Albrechtsen; Omar Florez; Søren Stobbe; Clivia M. Sotomayor-Torres; David García

doi:10.1117/12.2632233

3 October 2022 A cavity optomechanical platform for GHz phonon amplification via Anderson-localized optical modes

Ryan C. Ng, Guillermo Arregui, Guilhem Madiot, Marcus Albrechtsen, Omar Florez, Søren Stobbe, Clivia M. Sotomayor-Torres, David García

Author Affiliations +

Proceedings Volume PC12198, Optical Trapping and Optical Micromanipulation XIX; PC1219810 (2022) https://doi.org/10.1117/12.2632233
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States

Abstract

We explore Anderson-localized cavity optomechanics in a two-dimensional optomechanical platform: a waveguide etched in a suspended silicon membrane with an air slot. Inherent, unavoidable fabrication imperfections induce sufficient backscattering to realize Anderson-localized optical modes which can be driven to enable phonon lasing via optomechanical back-action. We observe mechanical lasing up to 6.8 GHz that results from confinement of the mechanical mode. The role of disorder in cavity optomechanics has thus far been largely overlooked, though our results indicate that it can have a decisive impact on device functionality and opens perspectives for studies of multiple scattering and Anderson localization of bosonic excitations with parametric coupling to mechanical degrees of freedom.

Conference Presentation

Citation Download Citation

Ryan C. Ng, Guillermo Arregui, Guilhem Madiot, Marcus Albrechtsen, Omar Florez, Søren Stobbe, Clivia M. Sotomayor-Torres, and David García "A cavity optomechanical platform for GHz phonon amplification via Anderson-localized optical modes", Proc. SPIE PC12198, Optical Trapping and Optical Micromanipulation XIX, PC1219810 (3 October 2022); https://doi.org/10.1117/12.2632233

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