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Proceedings Paper

Flashlamp pumping of Nd:glass disk amplifiers
Author(s): Howard T. Powell; Alvin C. Erlandson; Kenneth S. Jancaitis; James E. Murray
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Paper Abstract

We present experimental results and a model of Nd:glass disk amplifiers which are used in inertial confinement fusion research. We first review our previous measurements on pulsed xenon flashlamps. We then discuss out measurements on the enhancement of the Nd fluorescence decay rate in laser disks by amplified spontaneous emission. Using these data, we have constructed a model of flashlamp pumping which treats the transfer efficiency of pump light from the flashlamps to the disks as an empirical function. We have found a simple description of this cavity transfer function which provides an excellent fit to the amplifier results for various pump pulselengths. We discuss the concept of the pump area ratio for describing the flashlamp packing density and show that amplifier performance is optimized for values of this parameter near unity. We finally present results for both a singlesegment and a multisegment disk amplifier. We have used these devices to investigate new amplifier designs for a large scale fusion driver.

Paper Details

Date Published: 1 August 1990
PDF: 18 pages
Proc. SPIE 1277, High-Power Solid State Lasers and Applications, (1 August 1990); doi: 10.1117/12.20583
Show Author Affiliations
Howard T. Powell, Lawrence Livermore National Lab. (United States)
Alvin C. Erlandson, Lawrence Livermore National Lab. (United States)
Kenneth S. Jancaitis, Lawrence Livermore National Lab. (United States)
James E. Murray, Lawrence Livermore National Lab. (United States)

Published in SPIE Proceedings Vol. 1277:
High-Power Solid State Lasers and Applications
Clive L. M. Ireland, Editor(s)

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