(DEPSCOR) STIMULATED BRILLOUIN SCATTERING WITH III-NITRIDE INTEGRATED PHOTONICS
Abstract
DoD DEPSCoR Topic I.C.7 OptoelectronicsArmy Program Manager - Dr. Michael GerholdThis project is submitted Topic I.C.7 Optoelectronics, program manager Dr. Michael Gerhold. The coherent interaction between optical and acoustic fields plays a critical and rich role in the field of laser physics and nonlinear optics. One prominent example is stimulated Brillouin scattering (SBS), which has long history with fiber optics. The strong nonlinear effect provides distinct and useful properties for both fundamental research and practical applications. Important technologies such as ultra-narrow-linewidth laser, material characterization, microwave signal processing, and high resolution spectroscopy, have been developed based on Brillouin scattering. While traditional SBS is realized using bulk materials and fibers, recent on-chip demonstration has brought SBS research into a new level with tailored interaction, improved efficiency, and novel physics. However, the optical fields of on-chip SBS have been restricted to telecom wavelengths due to the fundamental material limit. This has significantly limited the application of SBS in emerging critical technologies such as quantum information processing, biosensing, atomic clocks, and precision spectroscopy, which have working wavelengths in the visible regime. Moreover, fragile devices with suspended mechanical structures are often required to realize acoustic confinement and strong nonlinear interaction. This places great obstacle for the transition of SBS from fundamental research into real-world applications. In this project, we propose to use III-Nitride photonics on sapphire substrates for on-chip SBS applications. The large bandgap will enable us to explore SBS in the visible wavelength regime. We aim to demonstrate the first on-chip SBS with visible wavelengths, targeting at the high-resolution spectroscopy and first on-chip visible Brillouin laser. The small stiffness of III-Nitride materials will eliminate the need of fragile structures, paving the road for large-scale applications.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 07, 2023
- Source ID
- FA95502110225
Entities
People
- Linran Fan
Organizations
- Air Force Office of Scientific Research
- Office of the Secretary of Defense