Dissipative optomechanical coupling

• Grant number: 20/15786-3
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• Start date: April 01, 2021
• End date: August 31, 2024
• Field of knowledge: Physical Sciences and Mathematics - Physics
• Principal Investigator: Thiago Pedro Mayer Alegre
• Grantee: Pedro Vinicius Pinho Nascimento
• Host Institution: Instituto de Física Gleb Wataghin (IFGW). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated research grant: 18/15580-6 - Optomechanical cavities towards single photon strong coupling, AP.JP2

Abstract

This project aims to develop micro and nanometric structures that will explore different geometries and materials to improve the non-linear interaction between photons and phonons. Our goal is to improve the optomechanical coupling, understand the limiting effects of each material and, taking advantage of the new capabilities of the materials, create fundamental and applied knowledge in integrated photonic devices. As a final objective, devices with highly dissipative and dispersive coupling will be manufactured based on passive structures from III-V, silicon and nitride alloys. In the active case, the student will interact with other members from our and other grupos to study and possible demonstrate the coupling between relaxation oscillations in the laser emission with optomechanical vibrations. The project will rely on the design of the structures supported by numerical simulations and the consequent fabrication using typical techniques for Silicon-on-Insulator (SOI) devices. The characterizations of the sources will be done by means of transmission or reflection measures in tapered optical fibers. Most of the manufacturing and preparation of the samples will be carried out at the IFGW Device Research Laboratory - UNICAMP, at the Semiconductor Components and Nanotechnology Center - UNICAMP, and at MackGraphe Lab - Mackenzie. (AU)