22 April 2005 A novel approach to the application of saturated laser-induced fluorescence in pseudospark discharge
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Proceedings Volume 5830, 13th International School on Quantum Electronics: Laser Physics and Applications; (2005); doi: 10.1117/12.618415
Event: 13th International School on Quantum Electronics: Laser Physics and Applications, 2004, Bourgas, Bulgaria
Abstract
Ground state copper vapour number density, sputtered from the cathode of an experimental pseudospark switch is measured in the main gap region, using laser-influenced fluorescence (LIF) from the copper transition 42P3/2-42D5/2 at 510.55 nm. The presented results are for pre-breakdown duration of 5 μs and lie in the range 4.5•1016-6•1017 m-3. The density is determined from the LIF signal by using both its maximum and integral. This approach follows from an otherwise familiar LIF model, which is examined in detail to reveal an unnoticed feature, namely the possibility to obtain an estimate of the lifetime of the laser excited level. A comparison between this estimate and the lifetime, measured from the exponential decay of the LIF signal reveals a good agreement.
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Vladimir Arsov, Klaus Frank, "A novel approach to the application of saturated laser-induced fluorescence in pseudospark discharge", Proc. SPIE 5830, 13th International School on Quantum Electronics: Laser Physics and Applications, (22 April 2005); doi: 10.1117/12.618415; https://doi.org/10.1117/12.618415
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KEYWORDS
Laser induced fluorescence

Copper

Pulsed laser operation

Switches

Laser applications

Luminescence

Metals

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