A new method based on the boundary element method (BEM) is developed to calculate high quality factors of whispering-gallery modes by studying the Poynting vector. The method has high calculation accuracy, which exceeds traditional methods with the same PC computation resource. To demonstrate the feasibility of the present method, circular and quadrupole microcavities are investigated with this method and compared with the results by analytical and finite element method (FEM) results, respectively.
© 2009 Optical Society of America
Lasers and Laser Optics
Original Manuscript: July 10, 2009
Manuscript Accepted: September 11, 2009
Published: October 9, 2009
Chang-Ling Zou, Yong Yang, Yun-Feng Xiao, Chun-Hua Dong, Zheng-Fu Han, and Guang-Can Guo, "Accurately calculating high quality factor of whispering-gallery modes with boundary element method," J. Opt. Soc. Am. B 26, 2050-2053 (2009)