Accurate modeling and characterization of photothermal forces in optomechanics

Author(s)

Primo, Andre G. ^{[1, 2]} ; Kersul, Caue M. ^{[1, 2]} ; Benevides, Rodrigo ^{[1, 2]} ; Carvalho, Natalia C. ^{[1, 2]} ; Menard, Michael ^[3] ; Frateschi, Newton C. ^{[1, 2]} ; de Assis, Pierre-Louis ^{[1, 2]} ; Wiederhecker, Gustavo S. ^{[1, 2]} ; Mayer Alegre, Thiago P. ^{[1, 2]}

Affiliation

^[1] Univ Estadual Campinas, Photon Res Ctr, BR-13083859 Campinas, SP - Brazil

^[2] Univ Estadual Campinas, Gleb Wataghin Inst Phys, Appl Phys Dept, BR-13083859 Campinas, SP - Brazil

^[3] Univ Quebec Montreal, Dept Comp Sci, BP 8888, Montreal, PQ H3C 3P8 - Canada

• Document type: Journal article
• Source: APL PHOTONICS; v. 6, n. 8 AUG 1 2021.
• Web of Science Citations: 0

Abstract

Photothermal effects have been pointed out as prominent sources of forces in optomechanical systems, competing with the standard radiation pressure interactions. In this article, we derive a novel and accurate model for the prediction of photothermal forces and establish how some previous proposals can be complemented to yield precise results. As a proof-of-concept, we perform numerical and experimental tests on GaAs microdisk cavities and obtain striking agreement with our framework, revealing the importance of considering surface photothermal forces and the effects of multiple thermal modes in microphotonic devices. (AU)

• FAPESP's process: 17/14920-5 - Measurement of the beating force in a system of coupled waveguides
• Grantee: Cauê Moreno Kersul de Castro Carvalho
• Support Opportunities: Scholarships in Brazil - Master
• 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: 18/25339-4 - Integrated photonics devices
• Grantee: Newton Cesario Frateschi
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 20/06348-2 - Non-linear effects and dissipation in optomechanical cavities
• Grantee: Cauê Moreno Kersul de Castro Carvalho
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 19/09738-9 - Near strong coupling optomechanical cavities
• Grantee: André Garcia Primo
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• 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: 16/18308-0 - Quantum optomechanics in microcavities
• Grantee: Rodrigo da Silva Benevides
• Support Opportunities: Scholarships in Brazil - Doctorate