Published in

American Institute of Physics, Applied Physics Letters, 11(99), p. 111111

DOI: 10.1063/1.3640211

Links

Tools

Export citation

Search in Google Scholar

Controlled tuning of whispering gallery modes of GaN/InGaN microdisk cavities

Journal article published in 2011 by Igor Aharonovich ORCID, Nan Niu, Fabian Rol, Kasey J. Russell, Alexander Woolf, Haitham A. R. El-Ella, Menno J. Kappers, Rachel A. Oliver, Evelyn L. Hu
This paper is available in a repository.
This paper is available in a repository.

Full text: Download

Green circle
Preprint: archiving allowed
Upload
Green circle
Postprint: archiving allowed
Upload
Orange circle
Published version: archiving restricted
Upload
Policy details
Data provided by SHERPA/RoMEO

Abstract

Controlled tuning of the whispering gallery modes of GaN/InGaN {μ}-disk cavities is demonstrated. The whispering gallery mode (WGM) tuning is achieved at room temperature by immersing the {μ}-disks in water and irradiating with ultraviolet (UV) laser. The tuning rate can be controlled by varying the laser excitation power, with a nanometer precision accessible at low excitation power (~ several {μ}W). The selective oxidation mechanism is proposed to explain the results and supported by theoretical analysis. The tuning of WGMs in GaN/InGaN {μ}-disk cavities may have important implication in cavity quantum electrodynamics and the development of efficient light emitting devices.