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Proceedings Paper

Development of a fluorescence-based point detector for biological sensing
Author(s): Per Jonsson; Fredrik Kullander; Melker Nordstrand; Torbjorn Tjarnhage; Par Wasterby; Mikael Lindgren
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Paper Abstract

This paper presents the status of an ongoing development of a point detector for biological warfare agent sensing based on ultraviolet laser-induced fluorescence from single particles in air. The detector will measure the fluorescence spectra of single particles in a sheath flow air beam. The spectral detection part of the system consists of a grating and a photomultiplier tube array with 32 channels, which measure fluorescence spectra in the wavelength band from 300 nm to 650 nm. The detector is designed to measure laser induced fluorescence from single laser pulses and has been tested by measuring fluorescence from simulants of biological warfare agents in aqueous solution. The solutions were excited with laser pulses at the wavelengths of 293 nm and 337 nm. The paper also presents preliminary results on the sheath flow particle injector and time-resolved measurements of fluorescence from biological warfare agent simulants in solution.

Paper Details

Date Published: 29 December 2004
PDF: 15 pages
Proc. SPIE 5617, Optically Based Biological and Chemical Sensing for Defence, (29 December 2004); doi: 10.1117/12.578231
Show Author Affiliations
Per Jonsson, FOI-Swedish Defence Research Agency (Sweden)
Fredrik Kullander, FOI-Swedish Defence Research Agency (Sweden)
Melker Nordstrand, FOI-Swedish Defence Research Agency (Sweden)
Torbjorn Tjarnhage, FOI-Swedish Defence Research Agency (Sweden)
Par Wasterby, FOI-Swedish Defence Research Agency (Sweden)
Mikael Lindgren, FOI-Swedish Defence Research Agency (Sweden)
Norwegian University of Science and Technology (Norway)

Published in SPIE Proceedings Vol. 5617:
Optically Based Biological and Chemical Sensing for Defence
John C. Carrano; Arturas Zukauskas, Editor(s)

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