Controlled Tuning of Whispering Gallery Modes of GaN/InGaN Microdisk Cavities

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Controlled Tuning of Whispering Gallery Modes of GaN/InGaN Microdisk Cavities

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Title: Controlled Tuning of Whispering Gallery Modes of GaN/InGaN Microdisk Cavities
Author: Aharonovich, Igor; Rol, Fabian; Niu, Nan; Russell, Kasey Joe; Woolf, Alexander J; El-Ella, Haitham A.R.; Kappers, Menno J.; Hu, Evelyn

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Citation: Aharonovich, Igor, Nan Niu, Fabian Rol, Kasey J. Russell, Alexander Woolf, Haitham A. R. El-Ella, Menno J. Kappers, Rachel A Oliver, and Evelyn L. Hu. 2011. Controlled tuning of whispering gallery modes of GaN/InGaN microdisk cavities. Applied Physics Letters 99 (11): 111111.
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Abstract: Controlled tuning of the whispering gallery modes of GaN/InGaN microdisk cavities is demonstrated. The whispering gallery mode (WGM) tuning is achieved at room temperature by immersing the microdisks in water and irradiating with ultraviolet laser. The tuning rate can be controlled by varying the laser excitation power, with a nanometer precision accessible at low excitation power (approximately several μW). The selective oxidation mechanism is proposed to explain the results and supported by theoretical analysis. The tuning of WGMs in GaN/InGaN microdisk cavities may have important implications in cavity quantum electrodynamics and the development of efficient light emitting devices.
Published Version: doi:10.1063/1.3640211
Other Sources: http://arxiv.org/abs/1108.4743
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:11006840
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