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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 30, Iss. 16 — Aug. 15, 2005
  • pp: 2083–2085

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

A. P. Yalin, M. DeFoort, B. Willson, Y. Matsuura, and M. Miyagi  »View Author Affiliations


Optics Letters, Vol. 30, Issue 16, pp. 2083-2085 (2005)
http://dx.doi.org/10.1364/OL.30.002083


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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.

© 2005 Optical Society of America

OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(060.2310) Fiber optics and optical communications : Fiber optics

Citation
A. P. Yalin, M. DeFoort, B. Willson, Y. Matsuura, and M. Miyagi, "Use of hollow-core fibers to deliver nanosecond Nd:YAG laser pulses to form sparks in gases," Opt. Lett. 30, 2083-2085 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-16-2083

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