Self-sustained photothermal oscillations in high-finesse Fabry-Perot microcavities
| Autor: | Juan Gomez Velez, Kumarasiri Konthasinghe, Luisa T. M. Profeta, M. Peiris, Adam J. Hopkins, Andreas Muller, Yamil Nieves |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
business.industry Cavity quantum electrodynamics Physics::Optics 02 engineering and technology Photothermal therapy 021001 nanoscience & nanotechnology 01 natural sciences Resonator Finesse Optics 0103 physical sciences Reflection (physics) Atom optics 010306 general physics 0210 nano-technology business Lithography Fabry–Pérot interferometer |
| Zdroj: | Physical Review A. 95 |
| ISSN: | 2469-9934 2469-9926 |
| DOI: | 10.1103/physreva.95.013826 |
| Popis: | We report the experimental investigation of a regime of microscopic Fabry-Perot resonators in which competing light-induced forces---photothermal expansion and photothermal refraction---acting oppositely and on different timescales lead to self-sustained persistent oscillations. Previously concealed as ordinary thermo-optic bistability---a common feature in low-loss resonator physics---these dynamics are visible as fast pulsations in cavity transmission or reflection measurements at sufficiently high time resolution. Their underlying mathematical description is shared by many slow-fast phenomena in chemistry, biology, and neuroscience. Our observations are relevant in particular to microcavity applications in atom optics and cavity quantum electrodynamics, even in nominally rigid structures that have not undergone lithography. |
| Databáze: | OpenAIRE |
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