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Laser beam combiner for thomson scattering core LIDAR.

Balboa, I. and Huang, B. and Naylor, G. and Walsh, M. and Sirinelli, A. and Parsons, P. and Fessey, J. and Townsend, M. and Beurskens, M. and Conway, N. and Flanagan, J. and Kempenaars, M. and Kirk, A. (2010) 'Laser beam combiner for thomson scattering core LIDAR.', Review of scientific instruments., 81 (10). 10D534.

Abstract

The light detection and ranging Thomson scattering (TS) diagnostic is advantageous since it only requires a single view port into the tokamak. This technique requires a short pulse laser at high energy, usually showing a limited repetition rate. Having multiple lasers will increase the repetition rate. This paper presents a scanning mirror as a laser beam combiner. Measurements of the position accuracy and jitter show that the pointing stability of the laser beam is within ±25 μrad for over tens of seconds. A control feedback loop is implemented to demonstrate the long term stability. Such a system could be applied for ITER and JET.

Item Type:Article
Keywords:Feedback, Jitter, Laser ranging, Light scattering, Measurement by laser beam, Mirrors, Optical radar, Position measurement, Tokamak devices.
Full text:PDF - Published Version (894Kb)
Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1063/1.3485081
Publisher statement:Copyright 2010 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Balboa, I. and Huang, B. and Naylor, G. and Walsh, M. and Sirinelli, A. and Parsons, P. and Fessey, J. and Townsend, M. and Beurskens, M. and Conway, N. and Flanagan, J. and Kempenaars, M. and Kirk, A. (2010) 'Laser beam combiner for thomson scattering core LIDAR.', Review of scientific instruments., 81 (10). 10D534 and may be found at http://dx.doi.org/10.1063/1.3485081
Record Created:09 Oct 2012 10:20
Last Modified:05 Aug 2014 11:21

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