Low-loss Materials for high Q-factor Bragg Reflector Resonators
Optics
2008-11-26 v1 Instrumentation and Detectors
Abstract
A Bragg resonator uses dielectric plates within a metallic cavity to confine the energy within a central free space region. The importance of the permittivity is shown with a better Q-factor possible using higher permittivity materials of larger intrinsic dielectric losses. This is because the electric energy in the reflectors decreases proportionally to the square root of permittivity and the coupling to the metallic losses decrease linearly. In a sapphire resonator with a single reflector pair a Q-factor of 2.34x10^5 is obtained, which may be improved on by up to a factor of 2 using higher permittivity materials.
Keywords
Cite
@article{arxiv.0807.2591,
title = {Low-loss Materials for high Q-factor Bragg Reflector Resonators},
author = {Jean-Michel le Floch and Michael E. Tobar and Dominique Cros and Jerzy Krupka},
journal= {arXiv preprint arXiv:0807.2591},
year = {2008}
}