Time-resolved crossed-beam thermal lens measurement as a nonintrusive probe of flow velocity
- 15 September 1985
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 24 (18) , 2981-2986
- https://doi.org/10.1364/ao.24.002981
Abstract
A simple theory is generated for crossed-beam thermal lens and photothermal deflection in flowing sample streams. This theory is used to analyze time-resolved crossed-beam thermal lens data. The result of the regression analysis may be used as a good probe of flow velocity in the 0.2–30-mm/sec range in liquid streams. Faster flow velocity should be measurable in gas streams.Keywords
This publication has 11 references indexed in Scilit:
- Photothermal Refraction For Scanning Laser MicroscopyOptical Engineering, 1984
- Two-component velocity measurements in a supersonic nitrogen jet with spatially resolved inverse Raman spectroscopyOptics Letters, 1984
- Laser-induced photothermal refraction for small volume absorbance determinationAnalytical Chemistry, 1984
- Experimental achievement of one million theoretical plates with microbore liquid chromatographic columnsAnalytical Chemistry, 1984
- Quantitative photothermal deflection spectroscopy in a flowing stream of gasApplied Optics, 1984
- Absolute measurement of optical attenuationApplied Physics Letters, 1983
- Observation and measurement of molecular flow using stimulated Raman gain spectroscopyIEEE Journal of Quantum Electronics, 1981
- Photothermal deflection spectroscopy and detectionApplied Optics, 1981
- Multiphoton absorption spectra using thermal blooming: I. TheoryChemical Physics, 1977
- A laser Doppler microscopeOptics Communications, 1974