Use of hollow-core fibers to deliver nanosecond Nd:YAG laser pulses to form sparks in gases

A. P. Yalin, M. DeFoort, B. Willson, Yuji Matsuura, M. Miyagi

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)

Abstract

We report what is to our knowledge the first delivery of nanosecond laser pulses through flexible fibers to produce optical sparks in atmospheric-pressure gases. Our work employs a Nd:YAG laser beam (1.064 μm) delivered through a cyclic olefin polymer-coated silver hollow fiber. We studied the beam properties at the fiber exit as a function of the fiber launch geometry. We found that for a low-angle launch (∼0.01 rad half-angle), the exit beam has relatively high optical intensity (∼2 GW/cm2) and low light divergence (∼0.01 rad half-angle) and allows downstream spark formation. The effect of fiber bending on the exit beam and on the ability to make sparks is also investigated.

Original languageEnglish
Pages (from-to)2083-2085
Number of pages3
JournalOptics Letters
Volume30
Issue number16
DOIs
Publication statusPublished - 2005 Aug 15

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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