Study of optoelectronic NO<sub>2</sub> detector using cavity enhanced absorption spectroscopy

Adam Czyzewski; Jacek Wojtas; Tadeusz Stacewicz; Zbigniew Bielecki; Miroslaw Nowakowski

doi:10.1117/12.722858

16 May 2007 Study of optoelectronic NO₂ detector using cavity enhanced absorption spectroscopy

Adam Czyzewski, Jacek Wojtas, Tadeusz Stacewicz, Zbigniew Bielecki, Miroslaw Nowakowski

Proceedings Volume 6585, Optical Sensing Technology and Applications; 65851R (2007) https://doi.org/10.1117/12.722858
Event: International Congress on Optics and Optoelectronics, 2007, Prague, Czech Republic

Abstract

We present the study of potential application of Cavity Enhanced Absorption Spectroscopy (CEAS) for construction of fully optoelectronic and portable NO₂ detector which could replace the commonly used chemical detectors. We demonstrate an experiment on detection of NO₂ in the ambient air. The concentration of investigated absorber was found by determination of decay time of pulse radiation trapped in the optical cavity constructed with two mirrors of a very high reflectivity coefficient (R > 99,99%). As a light source a blue pulsed diode laser was applied. The output signal was detected by a photomultiplier and analysed by a digital oscilloscope. For this construction the detection limit better than 1 ppb was obtained. The cavity parameters and it's adjustment were controlled by a beam from a red laser that is not absorbed by NO₂. In order to perform the measurements in two spectral regions the special mirrors have been developed. Study of influence of another NO_x compounds (especially NO₃) on final result was investigated as well.

Citation Download Citation

Adam Czyzewski, Jacek Wojtas, Tadeusz Stacewicz, Zbigniew Bielecki, and Miroslaw Nowakowski "Study of optoelectronic NO₂ detector using cavity enhanced absorption spectroscopy", Proc. SPIE 6585, Optical Sensing Technology and Applications, 65851R (16 May 2007); https://doi.org/10.1117/12.722858

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