Abstract
27Jul 2016 Study of time constant variation with concentration of a Gas in a Pulsed - Cavity Ring Down Spectroscopy. Y. Seetha Mahalakshmi , P. Madhusudana Rao and S. Surendra Babu Department of Physics, Jawaharlal Nehru Technological University, Hyderabad, India. Directorate of Laser Systems, Research Centre Imarat, Hyderabad, India.
Highlights
Pulsed-Cavity Ring down Spectroscopy(CRDS) is a promising technology capable of being self-calibrating besides being non-invasive and compact
This paper describes the basic principles of CRDS and summarizes the main application of it to gas detection at parts per billion level(ppb).In the present work, concentration of a gas is deduced basing on the Beer-Lamberts law and the time constant obtained for the three atmospheric gases NO2, SO2 and NO3 are studied at 1 part per billion concentration
Optical Resonator selection:One of the parameters of concern in a CRDS technique is of the resonator configuration
Summary
Pulsed-Cavity Ring down Spectroscopy(CRDS) is a promising technology capable of being self-calibrating besides being non-invasive and compact. Light from a pulsed laser is fed into a high finesse optical cavity, where the photons bounce back and forth losing intensity gradually following an exponential decay.
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call