Silicon-waveguide-coupled high-Q chalcogenide microspheres.
We fabricate high-Q arsenic triselenide glass microspheres through a three-step resistive heating process. We demonstrate quality factors greater than 2 x 10(6) at 1550 nm and achieve efficient coupling via a novel scheme utilizing index-engineered unclad silicon nanowires. We find that at powers above 1 mW the microspheres exhibit high thermal instability, which limits their application for resonator-enhanced nonlinear optical processes.
School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853, USA. dhb29@cornell.edu
Daniel H
DH
Broaddus
Mark A
MA
Foster
Imad H
IH
Agha
Jacob T
JT
Robinson
Michal
M
Lipson
Alexander L
AL
Gaeta
D018011:Chalcogens / Q000737:chemistry*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008422:Materials Testing; D008863:Microspheres; D055096:Optical Devices; D012031:Refractometry / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014159:Transducers
D018011:Chalcogens