Paper 13383-15
Paper 13383-15
Free-space coupling to ultra-high-Q microtoroid resonators (Invited Paper)
29 January 2025 • 3:00 PM - 3:30 PM PST | Moscone South, Room 206 (Level 2)
Abstract
Whispering gallery mode (WGM) microtoroid resonators are ultra-sensitive biochemical sensors. Traditional coupling using tapered optical fibers is fragile and requires precise alignment. Here we demonstrate free-space coupling using a digital micromirror device and an objective lens. Using this approach, we are able to achieve ultra-high Q-factors in excess of 100 million. This innovation paves the way for the creation of a robust, portable, ultra-sensitive biological and chemical sensing platform.
Presenter
Wyant College of Optical Sciences, The Univ. of Arizona (United States)
Judith Su is an Associate Professor in Biomedical Engineering and an Associate Professor of Optical Sciences at the University of Arizona. Judith received her B.S. and M.S. from MIT in Mechanical Engineering and her Ph.D. from Caltech in Biochemistry & Molecular Biophysics. Her lab focuses on building next generation optical sensing platforms and, with these sensors, collaborating with top researchers to solve the most significant and pressing problems in science, medicine, and issues confronting society. She is a recipient of an NSF CAREER award, an NIH R35 Outstanding Investigator Award, an American Society of Laser Surgery and Medicine Young Investigator Award, the Journal of Physics Photonics 2023 Early Career Award, and is one of the 2024 Photonics100 which recognizes the industry’s most innovative people. She was a Siegman International School on Lasers Lecturer, a Scialog: Chemical Machinery of the Cell Fellow, and was on the Board of Scientific Counselors for NIOSH.