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Optical Engineering

Application of a Lock-in Amplifier for Detecting Nanosecond Dye Laser Pulses
Author(s): Elliot F. Wyner; John A. Sousa; Joseph F. Roach
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Paper Abstract

The nitrogen-laser-pumped dye laser produces pulses of 2-8 nanoseconds in duration at repetition rates currently up to 500 pulses per second. With such a low duty cycle system, box-car analyzers are often used to amplify the signal from the photodetector. Except for some of the newer, ultra high-speed models, the box-car does not yield information as to pulse shape The technique to be described utilizes the more commonly available, and less expensive lock-in amplifier to measure light pulses. It will be shown that the signal derived with the lock-in is proportional to the total energy per pulse of the incident light. The technology employed to record oscillograms of these short duration pulses using regular side-on and end-on photomultiplier tubes is also discussed.

Paper Details

Date Published: 1 April 1974
PDF: 5 pages
Opt. Eng. 13(2) 132154 doi: 10.1117/12.7971690
Published in: Optical Engineering Volume 13, Issue 2
Show Author Affiliations
Elliot F. Wyner, U.S. Army Natick Laboratories (United States)
John A. Sousa, U.S. Army Natick Laboratories (United States)
Joseph F. Roach, U.S. Army Natick Laboratories (United States)

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