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Title: Initial operation of a pulse-burst laser system for high-repetition-rate Thomson scattering

Abstract

A pulse-burst laser has been installed for Thomson scattering measurements on the Madison Symmetric Torus reversed-field pinch. The laser design is a master-oscillator power-amplifier. The master oscillator is a commercial Nd:YVO{sub 4} laser (1064 nm) which is capable of Q-switching at frequencies between 5 and 250 kHz. Four Nd:YAG (yttrium aluminum garnet) amplifier stages are in place to amplify the Nd:YVO{sub 4} emission. Single pulses through the Nd:YAG amplifier stages gives energies up to 1.5 J and the gain for each stage has been measured. Repetitive pulsing at 10 kHz has also been performed for 2 ms bursts, giving average pulse energies of 0.53 J with {Delta}E/E of 4.6%, where {Delta}E is the standard deviation between pulses. The next step will be to add one of two Nd:glass (silicate) amplifier stages to produce final pulse energies of 1-2 J for bursts up to 250 kHz.

Authors:
;  [1];  [1];  [2]
  1. Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
22055775
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 81; Journal Issue: 10; Other Information: (c) 2010 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:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ALUMINIUM; GAIN; GARNETS; GLASS; KHZ RANGE; NEODYMIUM LASERS; NEUTRON EMISSION; OSCILLATORS; POWER AMPLIFIERS; PULSES; Q-SWITCHING; REVERSE-FIELD PINCH; THOMSON SCATTERING; VANADATES; YTTRIUM

Citation Formats

Harris, W. S., Hurst, N. C., Den Hartog, D. J., and Center for Magnetic Self-Organization in Laboratory and Astrophysical Plasmas, University of Wisconsin-Madison, Madison, Wisconsin 53706. Initial operation of a pulse-burst laser system for high-repetition-rate Thomson scattering. United States: N. p., 2010. Web. doi:10.1063/1.3466901.
Harris, W. S., Hurst, N. C., Den Hartog, D. J., & Center for Magnetic Self-Organization in Laboratory and Astrophysical Plasmas, University of Wisconsin-Madison, Madison, Wisconsin 53706. Initial operation of a pulse-burst laser system for high-repetition-rate Thomson scattering. United States. doi:10.1063/1.3466901.
Harris, W. S., Hurst, N. C., Den Hartog, D. J., and Center for Magnetic Self-Organization in Laboratory and Astrophysical Plasmas, University of Wisconsin-Madison, Madison, Wisconsin 53706. Fri . "Initial operation of a pulse-burst laser system for high-repetition-rate Thomson scattering". United States. doi:10.1063/1.3466901.
@article{osti_22055775,
title = {Initial operation of a pulse-burst laser system for high-repetition-rate Thomson scattering},
author = {Harris, W. S. and Hurst, N. C. and Den Hartog, D. J. and Center for Magnetic Self-Organization in Laboratory and Astrophysical Plasmas, University of Wisconsin-Madison, Madison, Wisconsin 53706},
abstractNote = {A pulse-burst laser has been installed for Thomson scattering measurements on the Madison Symmetric Torus reversed-field pinch. The laser design is a master-oscillator power-amplifier. The master oscillator is a commercial Nd:YVO{sub 4} laser (1064 nm) which is capable of Q-switching at frequencies between 5 and 250 kHz. Four Nd:YAG (yttrium aluminum garnet) amplifier stages are in place to amplify the Nd:YVO{sub 4} emission. Single pulses through the Nd:YAG amplifier stages gives energies up to 1.5 J and the gain for each stage has been measured. Repetitive pulsing at 10 kHz has also been performed for 2 ms bursts, giving average pulse energies of 0.53 J with {Delta}E/E of 4.6%, where {Delta}E is the standard deviation between pulses. The next step will be to add one of two Nd:glass (silicate) amplifier stages to produce final pulse energies of 1-2 J for bursts up to 250 kHz.},
doi = {10.1063/1.3466901},
journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 10,
volume = 81,
place = {United States},
year = {2010},
month = {10}
}