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

Volume

2

fYear

1997

fDate

6-10 Oct 1997

Firstpage

977

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering, 1997. 17th IEEE/NPSS Symposium

Conference_Location

San Diego, CA

Print_ISBN

0-7803-4226-7

Type

conf

DOI

10.1109/FUSION.1997.687788

Filename

687788