Slow thermo-optomechanical pulsations in suspended one-dimensional photonic crystal nanocavities
Anno: 2020
Autori: Fonseca P., Alda I., Marino F., Cuadrado A., D’Ambrosio V., Gieseler J., Quidant R.
Affiliazione autori: ICFO – Institut de Ciències Fotòniques, Mediterranean Technology Park, 08860 Castelldefels, Barcelona, Spain; Istituto Nazionale di Ottica, Via Sansone 1, I-50019 Sesto Fiorentino, Florence, Italy; Escuela de Ciencias Experimentales y Tecnología, University Rey Juan Carlos, Móstoles, 28933, Madrid, Spain; Dipartimento di Fisica, Università di Napoli Federico II, Complesso Universitario di Monte S. Angelo, Via Cintia, 80126 Napoli, Italy; ICREA – Institució Catalana de Recerca i Estudis Avançats, 08010 Barcelona, Spain; Nanophotonic Systems Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland.
Abstract: We investigate the nonlinear optical response of suspended one-dimensional (1D) photonic crystal nanocavities fabricated on a silicon nitride chip. Strong thermo-optical nonlinearities are demonstrated for input powers as low as 2 μW and a self-sustained pulsing regime is shown to emerge with periodicity of several seconds. As the input power and laser wavelength are varied the temporal patterns change in period, duty cycle, and shape. This dynamics is attributed to the multiple timescale competition between thermo-optical and thermo-optomechanical effects and closely resembles the relaxation oscillations states found in mathematical models of neuronal activity. We introduce a simplified model that reproduces all the experimental observations and allows us to explain them in terms of the properties of a 1D critical manifold which governs the slow evolution of the system.
Giornale/Rivista: PHYSICAL REVIEW A
Volume: 102 (5) Da Pagina: 053518-1 A: 053518-8
Maggiori informazioni: The authors acknowledge financial support from the European Research Council through Grant QnanoMECA (CoG-64790), Fundacio Privada Cellex, CERCA Programme/Generalitat de Catalunya, the Spanish Ministry of Economy and Competitiveness through the Severo Ochoa Programme for Centres of Excellence in R&D, and the Spanish Ministry of Education, Culture and Sport (Scholarship FPU14/02111).Parole chiavi: Neuronal dynamics, nonlinar dynamics, photonic crystals, nonlinear opticsDOI: 10.1103/PhysRevA.102.053518Citazioni: 2dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-04-21Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui