Laser beam combiner for Thomson scattering core LIDAR | Zendy

I. Balboa | Zendy; Bo Huang | Zendy; G. Naylor | Zendy; Mike Walsh | Zendy; A. Sirinelli | Zendy; Phil Parsons | Zendy; J. Fessey | Zendy; M. C. Townsend | Zendy; M. Beurskens | Zendy; N. J. Conway | Zendy; J. Flanagan | Zendy; M. Kempenaars | Zendy; A. Kirk | Zendy

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Laser beam combiner for Thomson scattering core LIDAR

Author(s) -

I. Balboa,

Bo Huang,

G. Naylor,

Mike Walsh,

A. Sirinelli,

Phil Parsons,

J. Fessey,

M. C. Townsend,

M. Beurskens,

N. J. Conway,

J. Flanagan,

M. Kempenaars,

A. Kirk

Publication year - 2010

Publication title -

review of scientific instruments

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.605

H-Index - 165

eISSN - 1089-7623

pISSN - 0034-6748

DOI - 10.1063/1.3485081

Subject(s) - thomson scattering , optics , laser , jitter , beam (structure) , tokamak , scattering , lidar , ranging , laser beam quality , physics , materials science , laser beams , plasma , computer science , telecommunications , nuclear physics

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

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