Reduction of Convective Low-Frequency Noise in Thermal Lens Spectrometry
- 1 November 1990
- journal article
- Published by SAGE Publications in Applied Spectroscopy
- Vol. 44 (9) , 1501-1507
- https://doi.org/10.1366/0003702904417779
Abstract
The construction and optimization of a thermal lens spectrometer with coaxial pump/probe configuration is reported. The low-frequency noise of convective origin is studied in detail, and it is demonstrated that a horizontal slit, instead of a pinhole, can be used as a simple way of reducing the noise to a negligible level without losing sensitivity.Keywords
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