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Optical Engineering

Measuring the effective pulse duration of nanosecond and femtosecond laser pulses for laser-induced damage experiments
Author(s): Alexandru Zorila; Laurentiu Rusen; Aurel Stratan; George Nemes
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Paper Abstract

We report on our approach to measure the quantity named effective pulse duration as defined in the ISO 21254-1:2011 standard, which deals with laser-induced damage (LID) threshold measurements. The approach is applied to measure pulses from two laser sources: an injection-seeded electro-optically Q-switched Nd:YAG nanosecond system with 10-Hz pulse repetition frequency, and a fully integrated Ti:sapphire laser with 150–400 fs and 2-kHz pulse repetition frequency. For comparison, the full-width-half-maximum (FWHM) of the same pulses is also measured. The analysis and description of the measurement process, the experimental results, and the corresponding uncertainties are presented. A smaller combined uncertainty is obtained for the effective pulse duration than for the FWHM-defined pulse duration for each time scale involved in experiments. This suggests that the effective pulse duration is the appropriate parameter to characterize the pulse duration in LID experiments.

Paper Details

Date Published: 31 May 2013
PDF: 11 pages
Opt. Eng. 52(5) 054203 doi: 10.1117/1.OE.52.5.054203
Published in: Optical Engineering Volume 52, Issue 5
Show Author Affiliations
Alexandru Zorila, National Institute for Lasers, Plasma and Radiation Physics (Romania)
Laurentiu Rusen, National Institute for Lasers, Plasma and Radiation Physics (Romania)
Aurel Stratan, National Institute for Lasers, Plasma and Radiation Physics (Romania)
George Nemes, National Institute for Lasers, Plasma and Radiation Physics (Romania)


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