Cascaded forward Brillouin lasing in a chalcogenide whispering gallery mode microresonator
Abstract
We report the first observation of cascaded forward stimulated Brillouin scattering in a microresonator platform. We have demonstrated 25 orders of intramodal Stokes beams separated by a Brillouin shift of 34.5 MHz at a sub-milliwatt threshold at 1550 nm. An As2S3 microsphere of diameter 125 µm with a quality factor of 1 × 106 was used for this demonstration. Theoretical modeling is used to support our experimental observations of Brillouin shift and threshold power. We expect our work will advance the field of forward stimulated Brillouin scattering in integrated photonics, with applications in gas sensing and photonic radio frequency sources.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 01, 2022
- Source ID
- 10.1063/5.0112847
Entities
People
- Bo Xu
- Juliet T. Gopinath
- Michael Grayson
- Mohammad Zohrabi Alaei
- Thariq Shanavas
- Wounjhang Park
Organizations
- Air Force Office of Scientific Research
- Office of Naval Research
- University of Colorado