Convective Effects in Thermal Lens Spectroscopy
- 1 September 1983
- journal article
- research article
- Published by SAGE Publications in Applied Spectroscopy
- Vol. 37 (5) , 455-458
- https://doi.org/10.1366/0003702834634875
Abstract
Thermally induced solution stirring can cause periodic signal fluctuations which can be the sensitivity limiting factor in thermal lens spectroscopy with a chopped pump laser. Pump and probe laser fluctuations are shown to be random, while thermal lens signals are shown to have a small periodic component caused by stirring. The problem is serious in dilute solutions because of the high solvent background absorbance.Keywords
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