Semicylindrical microresonator: excitation, modal structure, and Q-factor

• DOI: 10.1364/ao.57.006309
• Publication Date: 2018-07-20T15:43:01Z
• Authors: H. Haroyan; H. Parsamyan; T. Yezekyan; Kh. Nerkararyan
• Keywords: 0301 basic medicine; 0303 health sciences; 03 medical and health sciences; FOS: Physical sciences; Physics - Applied Physics; Applied Physics (physics.app-ph); 7. Clean energy; Physics - Optics; Optics (physics.optics)

The semicylindrical microresonator with relatively simple excitation with a plane wave is studied. The resonator is formed on the base of the dielectric/metal/dielectric structure, where the wave energy penetrates into resonator through a thin metal layer and stored in a semicylindrical dielectric with high permittivity. The proposed microresonator combines features of Fabry-Perot and Whispering gallery mode resonators. Dependence of radiation losses on the radius and materials are estimated by theoretical analysis, while excitation by a plane wave is shown via numerical analysis. The quality Q-factor of the resonator can achieve up to 104, at a radius of a semicylinder of several microns.<br/>5 pages, 4 figures, 9 equations, 31 references<br/>