From analysis of the high Q modes in a Bragg onion resonator with an omnidirectional reflector cladding, we establish a close analogy between such a resonator and a spherical hollow cavity in perfect metal. We demonstrate that onion resonators are ideal for applications that require a large spontaneous-emission factor β, such as thresholdless lasers and single-photon devices.
© 2004 Optical Society of America
Yong Xu, Wei Liang, Amnon Yariv, James G. Fleming, and Shawn-Yu Lin, "Modal analysis of Bragg onion resonators," Opt. Lett. 29, 424-426 (2004)