Electromagnetic Simulation of Coupled Silicon and Diamond Microdisks and Slab Waveguides in the Mid-infrared

摘要

Electromagnetic numerical studies of silicon and diamond microdisks coupled with silicon and diamond slab waveguides are performed in the CO_2 laser emission region in the mid-infrared. Microdisk is the 2D analog of the microsphere and the slab waveguide is the 2D analog of the rectangular optical waveguide. The evanescent coupling between the waveguide and the microdisk results in efficient pumping of the whispering gallery modes of the microdisk. On-resonant and off-resonant studies arc performed by tuning the laser wavelength to the microdisk whispering gallery modes.