Self-Sustained Laser Pulsation in Active Optomechanical Devices

Autor(es)

Princepe, Debora ^[1] ; Wiederhecker, Gustavo S. ^[1] ; Favero, Ivan ^[2] ; Frateschi, Newton C. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Gleb Wataghin Phys Inst, Appl Phys Dept, BR-13083859 Campinas, SP - Brazil

^[2] Univ Paris Diderot, Univ Sorbonne Paris Cite, CNRS UMR 7162, Mat & Phenomenes Quant, F-75013 Paris - France

• Tipo de documento: Artigo Científico
• Fonte: IEEE Photonics Journal; v. 10, n. 3 JUN 2018.
• Citações Web of Science: 1

Resumo

We developed a model for an active optomechanical cavity embedding a semiconductor optical gain medium in the presence of dispersive and dissipative optomechanical couplings. Radiation pressure drives the mechanical oscillation and the back-action occurs due to the mechanical modulation of the cavity loss rate. Our numerical analysis utilizing this model shows that, even in a wideband gain material, such mechanism couples the mechanical vibration with the laser relaxation oscillation, enabling an effect of self-pulsed laser emission. In order to investigate this effect, we propose a bullseye-shaped device with high confinement of both the optical and the mechanical modes at the edge of a disk combined with a dissipative structure in its vicinity. The dispersive interaction is promoted by the strong photoelastic effect while the dissipative mechanism is governed by the boundary motion mechanism, enhanced by near-field interaction with the absorptive structure. This hybrid optomechanical device is shown to lead sufficient coupling for the experimental demonstration of the self-pulsed emission. (AU)

• Processo FAPESP: 08/57857-2 - Fotônica para comunicações ópticas
• Beneficiário: Hugo Luis Fragnito
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 12/17765-7 - Nanofotônica em semicondutores do Grupo IV e III-V
• Beneficiário: Gustavo Silva Wiederhecker
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 11/18945-6 - Optomecânica em cavidades ativas
• Beneficiário: Débora Princepe
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 14/25453-0 - Incorporação de meio de ganho óptico a cavidades optomecânicas de semicondutor
• Beneficiário: Débora Princepe
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado Direto