Simple techniques for generating nanosecond blue light pulses from light emitting diodes

Veledar, Omar, Byrne, Phillip, Danaher, Sean, Allen, Joe, Thompson, Lee and McMillan, John (2006) Simple techniques for generating nanosecond blue light pulses from light emitting diodes. Measurement Science and Technology, 18 (1). pp. 131-137. ISSN 0957-0233

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Official URL: http://dx.doi.org/10.1088/0957-0233/18/1/016

Abstract

The electronic drive requirements for producing nanosecond optical pulses from blue light emitting diodes are considered. Simple circuits are used to generate the fast current pulses necessary to switch on and assist with the turn off of these devices. The intensity of the emitted radiation can be controlled by the magnitude of the drive current. Optical pulses in the nanosecond range are suitable for, but not limited to, the calibration of scintillation counters. The circuits described can be either free running or externally triggered. Typically, the optical pulse full width half maximum (FWHM) is below 1 ns. The presented techniques are not limited to blue LEDs and should be applicable to devices of longer wavelengths.

Item Type: Article
Subjects: F300 Physics
H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Sarah Howells
Date Deposited: 21 Nov 2012 16:37
Last Modified: 10 Aug 2015 11:35
URI: http://nrl.northumbria.ac.uk/id/eprint/10335

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