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Title: A pulse-burst laser system for a high-repetition-rate Thomson scattering diagnostic

Abstract

A ''pulse-burst'' laser system is being constructed for addition to the Thomson scattering diagnostic on the Madison Symmetric Torus (MST) reversed-field pinch. This laser is designed to produce a burst of up to 200 approximately 1 J Q-switched pulses at repetition frequencies 5-250 kHz. This laser system will operate at 1064 nm and is a master oscillator, power amplifier. The master oscillator is a compact diode-pumped Nd:YVO{sub 4} laser, intermediate amplifier stages are flashlamp-pumped Nd:YAG, and final stages will be flashlamp-pumped Nd:glass (silicate). Variable pulse width drive (0.3-20 ms) of the flashlamps is accomplished by insulated-gate bipolar transistor switching of large electrolytic capacitor banks. The burst train of laser pulses will enable the study of electron temperature (T{sub e}) and electron density (n{sub e}) dynamics in a single MST shot, and with ensembling, will enable correlation of T{sub e} and n{sub e} fluctuations with other fluctuating quantities.

Authors:
 [1]; ;  [2]
  1. Department of Physics and Center for Magnetic Self-Organization in Laboratory and Astrophysical Plasmas, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States)
  2. Department of Mechanical Engineering, Ohio State University, Columbus, Ohio 43210 (United States)
Publication Date:
OSTI Identifier:
21266559
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 79; Journal Issue: 10; Conference: HTPD08: 17. topical conference on high-temperature plasma diagnostics, Albuquerque, NM (United States), 11-15 May 2008; Other Information: DOI: 10.1063/1.2965733; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CAPACITORS; ELECTRON DENSITY; ELECTRON TEMPERATURE; GLASS; KHZ RANGE; NEODYMIUM; NEODYMIUM LASERS; OSCILLATORS; PLASMA DIAGNOSTICS; POWER AMPLIFIERS; PULSES; Q-SWITCHING; REVERSED-FIELD PINCH DEVICES; REVERSE-FIELD PINCH; SILICATES; THOMSON SCATTERING; TRANSISTORS; VANADATES

Citation Formats

Den Hartog, D. J., Jiang, N., and Lempert, W. R. A pulse-burst laser system for a high-repetition-rate Thomson scattering diagnostic. United States: N. p., 2008. Web. doi:10.1063/1.2965733.
Den Hartog, D. J., Jiang, N., & Lempert, W. R. A pulse-burst laser system for a high-repetition-rate Thomson scattering diagnostic. United States. doi:10.1063/1.2965733.
Den Hartog, D. J., Jiang, N., and Lempert, W. R. Wed . "A pulse-burst laser system for a high-repetition-rate Thomson scattering diagnostic". United States. doi:10.1063/1.2965733.
@article{osti_21266559,
title = {A pulse-burst laser system for a high-repetition-rate Thomson scattering diagnostic},
author = {Den Hartog, D. J. and Jiang, N. and Lempert, W. R.},
abstractNote = {A ''pulse-burst'' laser system is being constructed for addition to the Thomson scattering diagnostic on the Madison Symmetric Torus (MST) reversed-field pinch. This laser is designed to produce a burst of up to 200 approximately 1 J Q-switched pulses at repetition frequencies 5-250 kHz. This laser system will operate at 1064 nm and is a master oscillator, power amplifier. The master oscillator is a compact diode-pumped Nd:YVO{sub 4} laser, intermediate amplifier stages are flashlamp-pumped Nd:YAG, and final stages will be flashlamp-pumped Nd:glass (silicate). Variable pulse width drive (0.3-20 ms) of the flashlamps is accomplished by insulated-gate bipolar transistor switching of large electrolytic capacitor banks. The burst train of laser pulses will enable the study of electron temperature (T{sub e}) and electron density (n{sub e}) dynamics in a single MST shot, and with ensembling, will enable correlation of T{sub e} and n{sub e} fluctuations with other fluctuating quantities.},
doi = {10.1063/1.2965733},
journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 10,
volume = 79,
place = {United States},
year = {2008},
month = {10}
}