Oxygen Measurement with GaAIAs Diode Lasers
An oxygen analyzer using magnetic dipole transitions in conjunction with GaAIAs diode laser radiation at 763 nm with a response time of 10 ms is described. The lowest observable concentration is determined by optical noise. With a 7.2 m White cell, a detection limit of 500 ppm of oxygen is found for integrative and derivative spectroscopy.
KeywordsBeam Splitter Antireflexion Coating Tunable Diode Laser Optical Noise Derivative Spectroscopy
Unable to display preview. Download preview PDF.
- (1).W. J. Riedel, SPIE Proc. 99, 17 (1976).Google Scholar
- (2).R. Grisar, W. J. Riedel and D. R. Ball, in: Monitoring of Gaseous Pollutants by Tunable Diode Lasers, R. Grisar, H. Preier, G. Schmidtke and G. Restelli, eds., p. 153 (Reidel, 1987).Google Scholar
- (3).W. J. Riedel, M. Knothe, W. Kohn and R. Grisar, Proc. 4th Int. Conf. Infrared Physics, R. Kesselring and F. K. Kneubühl, eds., p. 504 (Zurich, 1988).Google Scholar