Light-controlled microwave whispering-gallery-mode quasi-optical resonators at 50W LED array illumination

Date

2015

Authors

Yurchenko V.B.
Ciydem, M.
Altintas, A.

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Abstract

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. © 2015 Author(s).

Source Title

AIP Advances

Publisher

American Institute of Physics Inc.

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Keywords

Frequency bands, Microwave resonators, Microwaves, Optical resonators, Q factor measurement, Resonance, Resonators, Whispering gallery modes, Centimeter-scale, Frequency channels, Microwave interactions, Microwave propagation, Optical control, Quasi-optical resonator, Resonance effect, Resonator Q-factor, Light emitting diodes

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Published Version (Please cite this version)

Language

English