Title :
Optimal Design and Reduced Threshold in Vertically Emitting Circular Bragg Disk Resonator Lasers
Author :
Sun, Xiankai ; Scheuer, Jacob ; Yariv, Amnon
Author_Institution :
Dept. of Appl. Phys., California Inst. of Technol., Pasadena, CA
Abstract :
We derive a comprehensive coupled-mode theory, including resonant vertical emission effects, for the analysis of nonperiodic circular Bragg lasers. We derive the governing characteristic equation for such lasers, yielding the threshold gain level and the resonance frequency. By reducing the threshold gain and maximizing the ratio of "useful signal" to the power leakage, we find optimum conditions for vertically emitting circular Bragg microdisk lasers which indicate that low-threshold operation is possible
Keywords :
Bragg gratings; coupled mode analysis; laser cavity resonators; laser modes; microdisc lasers; optical design techniques; coupled-mode theory; resonance frequency; threshold gain level; vertically emitting circular Bragg disk resonator lasers; Laser feedback; Laser theory; Optical coupling; Optical design; Optical reflection; Optical resonators; Semiconductor lasers; Sun; Surface emitting lasers; Vertical cavity surface emitting lasers; Bragg resonators; integrated optics; photonic crystals; surface emitting lasers;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2007.893559
