Cavity-enhanced molecular spectroscopy: a powerful tool to detect trace gases

Livio Gianfrani; Gianluca Gagliardi

doi:10.1117/12.364169

16 September 1999 Cavity-enhanced molecular spectroscopy: a powerful tool to detect trace gases

Livio Gianfrani, Gianluca Gagliardi

Proceedings Volume 3821, Environmental Sensing and Applications; (1999) https://doi.org/10.1117/12.364169
Event: Industrial Lasers and Inspection (EUROPTO Series), 1999, Munich, Germany

Abstract

A novel technique to measure trace gas concentrations is reported. It is based on a high finesse Fabry-Perot cavity, used as a gas cell, thus providing very long interaction path- lengths. As in Cavity-Ring-Down Spectroscopy, light absorption inside the cavity is detected, but measurements are performed in the frequency domain instead of the commonly used time domain. Moreover, wavelength modulation spectroscopy is performed for sensitive detection of absorption losses. Monitoring of water vapor near 1400 nm is demonstrated using this method.

Citation Download Citation

Livio Gianfrani and Gianluca Gagliardi "Cavity-enhanced molecular spectroscopy: a powerful tool to detect trace gases", Proc. SPIE 3821, Environmental Sensing and Applications, (16 September 1999); https://doi.org/10.1117/12.364169

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available