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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

High-frequency GaAs optomechanical bullseye resonator

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Carvalho, N. C. [1, 2] ; Benevides, R. [1, 2] ; Menard, M. [3] ; Wiederhecker, G. S. [1, 2] ; Frateschi, N. C. [1, 2] ; Mayer Alegre, T. P. [1, 2]
Total Authors: 6
[1] Univ Estadual Campinas, Gleb Wataghin Inst Phys, Photon Res Ctr, BR-13083859 Campinas, SP - Brazil
[2] Univ Estadual Campinas, Gleb Wataghin Inst Phys, Dept Appl Phys, BR-13083859 Campinas, SP - Brazil
[3] Univ Quebec Montreal, Dept Comp Sci, BP 8888, Montreal, PQ H3C 3P8 - Canada
Total Affiliations: 3
Document type: Journal article
Source: APL PHOTONICS; v. 6, n. 1 JAN 1 2021.
Web of Science Citations: 0

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. (AU)

FAPESP's process: 18/25339-4 - Integrated photonics devices
Grantee:Newton Cesario Frateschi
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 18/15580-6 - Optomechanical cavities towards single photon strong coupling
Grantee:Thiago Pedro Mayer Alegre
Support Opportunities: Research Grants - Young Investigators Grants - Phase 2
FAPESP's process: 17/19770-1 - Highly-optomechanically-coupled active and passive optical microcavities
Grantee:Natália Do Carmo Carvalho
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 18/15577-5 - Nonlinear nanophotonics circuits: building blocks for optical frequency synthesis, filtering and signal processing
Grantee:Gustavo Silva Wiederhecker
Support Opportunities: Research Grants - Young Investigators Grants - Phase 2
FAPESP's process: 16/18308-0 - Quantum optomechanics in microcavities
Grantee:Rodrigo da Silva Benevides
Support Opportunities: Scholarships in Brazil - Doctorate