Journal
APPLIED PHYSICS LETTERS
Volume 105, Issue 22, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4902914
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Funding
- Air Force Office of Scientific Research
- DARPA MTO
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Spark discharges in high-pressure gas are known to emit a broadband spectrum during the first 10 s of nanoseconds. We present calibrated spectra of high-pressure discharges in xenon and show that the resulting plasma is optically thick. Laser transmission data show that such a body is opaque to visible light, as expected from Kirchoff's law of thermal radiation. Nanosecond framing images of the spark absorbing high-power laser light are presented. The sparks are ideal candidates for nanosecond, high-power laser switches. (C) 2014 AIP Publishing LLC.
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