Title :
Radiation effects on optical components of a laser radar sensor designed for remote metrology in ITER
Author :
Menon, M.M. ; Grann, E.B. ; Slotwinski, A.
Author_Institution :
Oak Ridge Nat. Lab., TN, USA
Abstract :
A frequency modulated laser radar being developed for in-vessel metrology viewing of plasma-facing surfaces, optical components of this sensor must withstand intense gamma radiation (3×106 rad/h) during operation. We have tested the effect of radiation on a silica core polarization maintaining optical fiber and on TeO2 crystals at doses up to -109 rad. Additional tests are planned for evaluating the performance of a complete acousto-optic (AO) scanning device. The progress made in these tests is also described
Keywords :
acousto-optical devices; fibre optic sensors; frequency modulation; fusion reactor instrumentation; measurement by laser beam; optical modulation; optical radar; optical scanners; plasma diagnostics; ITER; TeO2 crystals; complete acousto-optic scanning device; frequency modulated laser radar; in-vessel metrology viewing; intense gamma radiation; laser radar sensor design; optical components; plasma-facing surfaces; radiation effects; radiation hardening; remote metrology; silica core polarization maintaining optical fiber; Acoustic testing; Fiber lasers; Frequency modulation; Intensity modulation; Laser radar; Metrology; Optical devices; Optical sensors; Plasmas; Radiation effects;
Conference_Titel :
Fusion Engineering, 1997. 17th IEEE/NPSS Symposium
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-4226-7
DOI :
10.1109/FUSION.1997.687788
