New optics method of low-concentration particles detection in liquids

Stanislav F. Rastopov

doi:10.1117/12.180790

21 July 1994 New optics method of low-concentration particles detection in liquids

Stanislav F. Rastopov

Author Affiliations +

Proceedings Volume 2136, Biochemical Diagnostic Instrumentation; (1994) https://doi.org/10.1117/12.180790
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

A new highly sensitive method of detection of the Browns or bio-particles in liquids, based on the fluctuations intensity spectroscopy, is described. A special scheme of disposition of photodetectors has made it possible to significantly reduce noise due to intensity fluctuations of probe laser radiation. As a result the detection sensitivity increases and is mainly restricted by electronical noise. We demonstrate the high sensitivity of the method allowed to detect the presence of viable micro-organisms in natural water reservoirs. The optical scheme of the device and preliminary experimental data are presented.

Citation Download Citation

Stanislav F. Rastopov "New optics method of low-concentration particles detection in liquids", Proc. SPIE 2136, Biochemical Diagnostic Instrumentation, (21 July 1994); https://doi.org/10.1117/12.180790

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