Measuring optical loss in yttrium orthosilicate using a whispering gallery mode resonator
Abstract
The fabrication of a yttrium orthosilicate (YSO) whispering gallery mode (WGM) resonator is described, displaying quality (Q)-factors as high as 1.1 × 109. An overview of the experimental setup is presented including the procedure for spatial and spectral characterisation of the WGMs. We consider the optical losses present in such a resonator and what steps were taken in order to minimise these losses. The surface scattering in such a resonator is considered and we show that in the wavelength range of 1.5 μm, the Q-factor is not limited by scattering losses for the case in which surface inhomogeneities are weakly correlated. The high Q-factors we demonstrate have implications for rare earth ion dopant based quantum technologies because YSO is an important host material for these applications.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 07, 2022
- Source ID
- 10.1088/2633-4356/ac4c39
Entities
People
- Daniel S. Norman
- Farhan Azeem
- Harald G. L. Schwefel
- Jevon Longdell
Organizations
- Army Research Office