Agradecimentos: The authors acknowledge CCSNano-UNICAMP for providing the micro-fabrication infrastructure and CMC Microsystems for providing access to MBE epitaxy and the GaAs wafers. This work was supported by the São Paulo Research Foundation (FAPESP) under Grant Nos. 2017/19770-1, 2016/18308-0,...

Agradecimentos: The authors acknowledge CCSNano-UNICAMP for providing the micro-fabrication infrastructure and CMC Microsystems for providing access to MBE epitaxy and the GaAs wafers. This work was supported by the São Paulo Research Foundation (FAPESP) under Grant Nos. 2017/19770-1, 2016/18308-0, 2018/15580-6, 2018/15577-5, and 2018/25339-4, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), Brasil (Finance Code 001), the Financiadora de Estudos e Projetos, and the National Sciences and Engineering Research Council (NSERC) of Canada

Abstract: The integration of optomechanics and optoelectronics in a single device opens new possibilities for developing information technologies and exploring fundamental phenomena. Gallium arsenide (GaAs) is a well-known material that can bridge the gap between the functionalities of...

Abstract: The integration of optomechanics and optoelectronics in a single device opens new possibilities for developing information technologies and exploring fundamental phenomena. Gallium arsenide (GaAs) is a well-known material that can bridge the gap between the functionalities of optomechanical devices and optical gain media. Here, we experimentally demonstrate a high-frequency GaAs optomechanical resonator with a ring-type bullseye geometry that is unprecedented in this platform. We measured mechanical modes up to 3.4 GHz with quality factors of 4000 (at 80 K) and optomechanical coupling rates up to 39 kHz at telecom wavelengths. Moreover, we investigated the material symmetry break due to elastic anisotropy and its impact on the mechanical mode spectrum. Finally, we assessed the temperature dependence of the mechanical losses and demonstrated the efficiency and anisotropy resilience of the bullseye anchor loss suppression, indicating that lower temperature operation may allow mechanical quality factors over 10(4). Such characteristics are valuable for active optomechanics, coherent microwave to optics conversion via piezomechanics, and other implementations of high-frequency oscillators in III-V materials

FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP

2016/18308-0; 2017/19770-1; 2018/15577-5; 2018/15580-6; 2018/25339-4

COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPES

001

FINANCIADORA DE ESTUDOS E PROJETOS - FINEP

Aberto