Dowling, D. R. and Lang, D. B. and Dimotakis, P. E. (1989) An improved laser-Rayleigh scattering photodetection system. Experiments in Fluids, 7 (7). pp. 435-440. ISSN 0723-4864. doi:10.1007/BF00187060. https://resolver.caltech.edu/CaltechAUTHORS:20160602-174109500
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Abstract
An improved photodetection system for high resolution laser-Rayleigh scattering measurements has been developed that utilizes a solid state detector coupled to a custom-designed, low-noise, transimpedance amplifier. The resulting system, based on a PIN photodiode is less expensive, inherently safer, less delicate and, depending on the detected light level, may exhibit higher signal-to-noise ratios than photodetection systems based on photomultiplier tubes. The frequency response of the system was designed to be uniform (3% peak variation) from DC to nearly 100 kHz. Concentration fluctuation spectra of a high scattering cross-section label (jet fluid) gas discharging into a density-matched, low scattering cross-section quiescent reservoir gas were measured using this system. Spectral signal-to-noise ratios as high as 7 decades were achieved under some conditions in parts of the spectrum.
| Item Type: | Article | |||||||||
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| Additional Information: | © 1989 Springer-Verlag. | |||||||||
| Group: | GALCIT | |||||||||
| Issue or Number: | 7 | |||||||||
| DOI: | 10.1007/BF00187060 | |||||||||
| Record Number: | CaltechAUTHORS:20160602-174109500 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20160602-174109500 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 67614 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Paul Dimotakis | |||||||||
| Deposited On: | 06 Jun 2016 21:23 | |||||||||
| Last Modified: | 11 Nov 2021 03:51 |
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