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|Title:||Efficient anchor loss suppression in coupled near-field optomechanical resonators|
|Author:||Luiz, Gustavo O.|
Benevides, Rodrigo S.
Santos, Felipe G. S.
Espinel, Yovanny A. V.
Alegre, Thiago P. Mayer
Wiederhecker, Gustavo S.
|Abstract:||Elastic dissipation through radiation towards the substrate is a major loss channel in micro-and nanomechanical resonators. Engineering the coupling of these resonators with optical cavities further complicates and constrains the design of low-loss optomechanical devices. In this work we rely on the coherent cancellation of mechanical radiation to demonstrate material and surface absorption limited silicon near-field optomechanical resonators oscillating at tens of MHz. The effectiveness of our dissipation suppression scheme is investigated at room and cryogenic temperatures. While at room temperature we can reach a maximum quality factor of 7.61k (fQ-product of the order of 10(11) Hz), at 22 K the quality factor increases to 37k, resulting in a fQ-product of 2 x 10(12) Hz.|
|Editor:||Optical Society of America|
|Appears in Collections:||IFGW - Artigos e Outros Documentos|
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