WGM microresonator coupling and Erbium Laser
This video shows whispering-gallery-mode (WGM) microtoroids under a microscope. The resonator is Erbium doped for lasing operation. Pump laser wavelength band is in 1450nm. Laser is generated in 1550nm band. The green light is due to three-photon upconversion of Er ions.
Detecting R=100nm Single Gold Nanoparticles with WGM microresonator- mode splitting
Each particle binding causes a change in the mode splitting spectrum of the whispering-gallery-mode microtoroid-fiber taper system, enabling the detection and sizing of single nanoparticles.
4th flapping mode in a opto-mechanical resonator4th flapping mode in a opto-mechanical resonator. The simulation is done by Comsol Multiphysics.
Prof. Lan Yang
Department of Electrical and Systems Engineering
- Campus Box 1042, Washington University
- Saint Louis, MO 63130
- Email: email@example.com
Phone: 314-935-9543, Fax: 314-935-7500