V. Ya. Zaslavskii, A. I. Nadezhdinskii, Ya. Ya. Ponurovskii, S. M. Chernin, “Measurement of formaldehyde H<sub>2</sub>CO concentration in air using diode vertical-cavity lasers”, Kvantovaya Elektronika, 2011, Volume 41, Number 1,Pages <nobr>81

This article is cited in 3 papers

Laser applications

Measurement of formaldehyde H₂CO concentration in air using diode vertical-cavity lasers

V. Ya. Zaslavskii, A. I. Nadezhdinskii, Ya. Ya. Ponurovskii, S. M. Chernin

Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow

Abstract: A two-channel gas-analysing spectrometer is developed using a vertical-cavity surface-emitting laser (VCSEL) (λ=1.79 μm) and a multi-pass cell (total optical length 39 m) for studying the absorption spectra and measuring the background concentration of formaldehyde. High-resolution absorption spectra of formaldehyde are obtained within the VCSEL frequency tuning range (λ~1.79 μm). Changing the background concentration of H₂CO, the sensitivity limit of the gas analyser is estimated.

PACS: 42.62.Fi, 42.55.Px, 07.88.+y

Received: 28.09.2010