Optics.org
daily coverage of the optics & photonics industry and the markets that it serves
Menu
Ring down spectroscopy
A tunable laser delivers light into an optical cavity formed by three high-reflectivity mirrors. When the laser is shut off, the intensity of light inside the cavity decreases exponentially and measured using a photo-detector.
Image credit: Asron Van Pelt, Picarro.
Copyright © 2022 SPIE EuropeDesigned by Kestrel Web Services