Evaluation of the influence of surface irregularity of optical crystal microresonators on their dispersion characteristics

Abstract

Advantages and prospects of using optical microresonators for the development of measuring instruments based on frequency combs are described. A principle of a frequency comb generator based on an optical microresonator is considered. An example of modeling the properties of microresonators used to generate optical frequency combs is considered. The influence of the nonuniformity of the optical microresonator’s generatrix on the value of the total dispersion has been studied. It is shown that the presence of nonuniformity on the surface affects the dispersion parameters and can also lead to the effect of mode shape splitting in microresonators. We have shown that this effect is particularly dependent on the position and the value of the depth of nonuniformity.

Keywords

• whispering-gallery-mode microresonators
• finite element method
• dispersion engineering