Narrow-Linewidth Brillouin Laser Source Based on Chalcogenide Resonators in the Mid-Infrared Region
Abstract
The ultimate goal of this project is to develop a narrow linewidth laser based on stimulated Brillouin scattering (SBS). Achieving narrow linewidth lasing in a portable, compact device platform is one of the outstanding challenges in the field of laser development, especially for military applications in which power, weight, size and robustness are critical. Chip-scale microresonators are the natural candidate for miniaturized and integrated devices. During the past decades, there has been remarkable progress in high-Q microresonators, including the demonstration of ultrahigh Q factors approaching a billion and Raman and Brillouin lasing. In particular, SBS, a third-order nonlinearity arising from the interaction between photon and acoustic phonon, has been shown to provide narrow linewidth, thanks to the combined effect of acoustic damping and cavity feedback. Recently, an ultra-narrow linewidth Brillouin laser has been demonstrated using a fiber resonator and also a silicon racetrack resonator, both of which operated at telecom wavelengths. A natural direction to further the current state-of-the-art is a Brillouin laser operating in the mid-infrared region. For this, chalcogenide-based microresonators make an excellent device platform and we propose narrow linewidth laser sources, based on chalcogenide microresonators.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 2023
- Accession Number
- AD1230693
Entities
People
- Wounjhang Park
Organizations
- University of Colorado Boulder