Light-controlled microwave whispering-gallery-mode quasi-optical resonators at 50W LED array illumination
| Autor: | Ayhan Altintas, Mehmet Ciydem, V. Yurchenko |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Optical resonators
Optical control Physics::Optics General Physics and Astronomy Resonance Optical switch law.invention Resonator Optics Resonance effect Resonator Q-factor law Frequency bands Resonators Frequency channels Microwaves Physics business.industry Fano resonance Centimeter-scale Laser Quasi-optical resonator lcsh:QC1-999 Microwave resonators Light emitting diodes Whispering gallery modes Q factor Optoelectronics Q factor measurement Whispering-gallery wave Microwave propagation business Microwave interactions lcsh:Physics Microwave Light-emitting diode |
| Zdroj: | AIP Advances AIP Advances, Vol 5, Iss 8, Pp 087144-087144-6 (2015) |
| ISSN: | 2158-3226 |
| DOI: | 10.1063/1.4928868 |
| Popis: | We present experimental observations of light-controlled resonance effects in microwave whispering-gallery-mode quasi-optical dielectric-semiconductor disk resonators in the frequency band of 5 GHz to 20 GHz arising due to illumination from a light emitting diode (LED) of 50W power range. We obtain huge enhancement of photo-sensitivity (growing with the resonator Q-factor) that makes light-microwave interaction observable with an ordinary light (no laser) at conventional brightness (like an office lighting) in quasi-optical microwave structures at rather long (centimeter-scale) wavelength. We also demonstrate non-conventional photo-response of Fano resonances when the light suppresses one group of resonances and enhances another group. The effects could be used for the optical control and quasi-optical switching of microwave propagation through either one or another frequency channel. (C) 2015 Author(s). |
| Databáze: | OpenAIRE |
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