High order modes in a spherical FabryPerot resonator
Abstract
A theoretical and experimental study was made to examine the accuracy of an approximate solution to the wave equation for a largeaperture FabryPerot laser resonator at Xband frequencies. The resonant frequency was found to deviate from the predicted value by as much as 2 percent for high radialmode numbers. Two firstorder perturbation calculations, including a neglected term in the wave equation and the nonsphericity of the constantphase surfaces, yielded resonant frequencies in agreement with experiment.
 Publication:

IEEE Transactions on Microwave Theory Techniques
 Pub Date:
 February 1975
 DOI:
 10.1109/TMTT.1975.1128530
 Bibcode:
 1975ITMTT..23..218E
 Keywords:

 FabryPerot Interferometers;
 Microwave Resonance;
 Perturbation Theory;
 Resonant Frequencies;
 Superhigh Frequencies;
 Approximation;
 Frequency Shift;
 Mirrors;
 Optical Waveguides;
 Spheres;
 Surface Geometry;
 Wave Equations;
 Electronics and Electrical Engineering