Exail Banner
Exail Banner
daily coverage of the optics & photonics industry and the markets that it serves
Featured Showcases
Defense+Commercial Sensing Showcase
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.
© 2023 SPIE Europe
Top of Page