Single-Laser, Single-Beam Pump/Probe Thermal Lens Spectroscopy
- 1 September 1987
- journal article
- research article
- Published by SAGE Publications in Applied Spectroscopy
- Vol. 41 (7) , 1189-1193
- https://doi.org/10.1366/0003702874447716
Abstract
A unique design for a thermal lens photometer based on a single-laser/single-beam configuration is presented. The system is compatible with lock-in detection and uses a pair of acoustooptic modulators to temporally separate the pump and probe events. A minimum measurable absorbance of 6 × 10−6 cm−1 is reported. Limitations to the use of acoustooptic modulation at high absorbances are discussed.Keywords
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