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A study of transparent contact to vertical GaN-based light-emitting diodes
In this study, transparent indium tin oxide (ITO) deposited by sputtering was applied to laser lift-off (LLO) GaN-based vertical light-emitting diodes (VLEDs) and the electrical and optical properties...

Measurements of low-level prepulse on Nike KrF laser

J. Appl. Phys. 98, 053101 (2005); doi:10.1063/1.2032619

Published 6 September 2005

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Max Karasik, A. N. Mostovych, R. H. Lehmberg, Y. Chan, J. L. Weaver, and S. P. Obenschain
Plasma Physics Division, Naval Research Laboratory, Washington DC 20375
The krypton fluoride (KrF) laser is a leading candidate driver for inertial fusion energy. Some of the current fusion target designs call for targets with thin metallic coatings. These targets could be particularly susceptible to preheat by a low-level laser prepulse. Knowledge of the prepulse can be important in understanding and modeling the behavior of such targets. This paper presents measurements of low-level prepulse on target with the Nike KrF laser. Sources of prepulse are discussed and measurements are performed under several specific laser conditions in order to evaluate the relative contribution of these sources to the overall prepulse. Prepulse is found to be ~2×10–7 from peak intensity for approximately 120  ns prior to the main laser pulse. Prepulse energy density on target is ~2  J/cm2. The first laser amplifier in the time- and angle-multiplexed section of the laser is found to be the dominant source of prepulse. ©2005 American Institute of Physics
History: Received 29 October 2004; accepted 18 July 2005; published 6 September 2005
Permalink: http://link.aip.org/link/?JAPIAU/98/053101/1

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KEYWORDS and PACS

Keywords
PACS
  • 42.55.Lt
    Gas lasers including excimer and metal-vapor lasers
  • 42.65.Re
    Ultrafast processes; optical pulse generation and pulse compression
  • 28.52.Av
    Fusion reactor theory, design, and computerized simulation
  • YEAR: 2005

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PUBLICATION DATA

ISSN:
0021-8979 (print)   1089-7550 (online)
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REFERENCES (11)
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