High sensitivity point monitoring of atmospheric gases employing tunable diode lasers
- 1 June 1978
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 17 (11), 1806-1810
- https://doi.org/10.1364/ao.17.001806
Abstract
A laser absorption spectrometer is described which employs a wavelength tunable diode laser in conjunction with a multipass White cell. The instrument is sensitive to absorption coefficients as low as 3 × 10−8 m−1 and is designed for use as a portable pollution monitor. The performance of the instrument is illustrated by describing the measurement of three gases commonly found in the atmosphere: SO2 and N2O with sensitivities of 1 ppb and NH3 with a sensitivity of better than 0.1 ppb. The linearity of response and calibration of the instrument are also discussed in some detail.This publication has 3 references indexed in Scilit:
- High sensitivity pollution detection employing tunable diode lasersApplied Optics, 1978
- Spectral data for the ν2 bands of ammonia with applications to radiative transfer in the atmosphere of jupiterJournal of Quantitative Spectroscopy and Radiative Transfer, 1973
- Background trace gas concentrations in the central United StatesJournal of Geophysical Research, 1973