Dr. Ryan Behunin
Department of Applied Physics & Materials Science
Center for Materials Interfaces in Research & Applications
Northern Arizona University
Owing to their highly coherent emission and compact form factor, stimulated Brillouin scattering (SBS) lasers have been recognized as an attractive solution for applications such as portable atomic clocks, precision sensors, coherent microwave synthesis and energy-efficient approaches to coherent communications. While the SBS emission can be very narrow band, noise inherent within dielectric materials leads to drift in the Brillouin laser frequency posing vexing challenges for high-end applications requiring ultra-stable emission. In this talk, I’ll discuss our efforts to develop unified models to understand Brillouin laser physics that incorporate the dominant sources of noise. The physics and applications of Brillouin scattering will be introduced, and our modeling approach will be discussed. Our predictions will be compared with data from an integrated photonic SBS laser, showing that the thermorefractive effect plays a critical role in the laser’s frequency stability.
This seminar will be held exclusively on Zoom (955 5209 1021). Please visit the Physics Seminars page for a link.