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Highly Sensitive Absorption Spectroscopy of the Ozone Molecule around 1.5 μm

✍ Scribed by H. Wenz; W. Demtröder; J.M. Flaud

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
444 KB
Volume
209
Category
Article
ISSN
0022-2852

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✦ Synopsis

The overtone spectra of O 3 around λ = 1.5 µm have been measured with a homemade widely tunable single mode GaAs diode laser with external Littman resonator. The sensitivity was greatly enhanced by using wavelength modulation techniques, a multipass absorption cell, and a balanced ratiometric detector device. The ozone preparation technique, the wavelength calibration, and the analysis of the ozone spectra are presented. The information obtained from these spectra regarding the vibrational-rotational patterns, which are strongly influenced by numerous couplings between energy levels, is discussed.

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