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Proceedings Paper

New light sources for time-correlated single photon counting in commercially available spectrometers
Author(s): Roger Fenske; Dirk U. Näther; Mark Goossens; S. Desmond Smith
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Paper Abstract

The method of Time Correlated Single Photon Counting requires high repetitive light sources (>100kHz) with pulse widths of ideally less than approximately 20ps. While these light sources have been available for some time now in the form of Ti:Sapphire lasers, picosecond pulsed diode lasers (<90ps) and light emitting diodes (<700ps), they all have the drawback of either having no spectral tunability, or tunability over a very narrow spectral range (10nm-100nm). While this is often sufficient for specific laboratory setups for measurements of fluorescence lifetimes, commercial Fluorescence Lifetime Spectrometers have suffered for a long time from the lack of the availability of simple, compact and relatively inexpensive broad spectral band light sources that can be employed for Time Correlated Single Photon Counting. A new light source as an integral part of a commercial fluorescence lifetime spectrometer will be discussed that allows tunability over a wide spectral band of more than 500nm.

Paper Details

Date Published: 25 October 2006
PDF: 10 pages
Proc. SPIE 6372, Advanced Photon Counting Techniques, 63720H (25 October 2006); doi: 10.1117/12.688421
Show Author Affiliations
Roger Fenske, Edinburgh Instruments Ltd. (United Kingdom)
Dirk U. Näther, Edinburgh Instruments Ltd. (United Kingdom)
Mark Goossens, Edinburgh Instruments Ltd. (United Kingdom)
S. Desmond Smith, Edinburgh Instruments Ltd. (United Kingdom)

Published in SPIE Proceedings Vol. 6372:
Advanced Photon Counting Techniques
Wolfgang Becker, Editor(s)

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