Remote sensing phase fluorimetry using mercury vapor lamp

Michael A. Lundin; Matthew J. Bohn

doi:10.1117/12.718606

27 April 2007 Remote sensing phase fluorimetry using mercury vapor lamp

Michael A. Lundin, Matthew J. Bohn

Proceedings Volume 6555, Sensors and Systems for Space Applications; 655502 (2007) https://doi.org/10.1117/12.718606
Event: Defense and Security Symposium, 2007, Orlando, Florida, United States

Abstract

Phase Fluorimetry, or Frequency Domain (FD) Fluorimetry, capitalizes on the phase delay from excitation modulation of fluorescent media and offers independence from light scatter and excitation/emission intensity variations in order to extract the sample's fluorescent lifetime. Samples which fluoresce in the UV are commonly excited with UV laser sources, which are not necessarily high power, portable devices. Mercury vapor lamps, a common source of industrial facility lighting, emit wavelengths (365 nm, 405 nm, and 436 nm) that overlap the UV/blue spectrum and may be used as an efficient and portable excitation source. Mercury vapor lamps show strong peak intensities at 120 Hz and higher harmonics, due to the modulation of facility power at 60 Hz in the United States. For this research effort, single exponential decay will be assumed and lifetime calculation will be performed by least squares analysis with corrections made for lamp intensity variations at the harmonics of facility power.

Citation Download Citation

Michael A. Lundin and Matthew J. Bohn "Remote sensing phase fluorimetry using mercury vapor lamp", Proc. SPIE 6555, Sensors and Systems for Space Applications, 655502 (27 April 2007); https://doi.org/10.1117/12.718606

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KEYWORDS

Lamps

Mercury

Modulation

Phase shift keying

Remote sensing

Sensors

Ultraviolet radiation

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