Radiation effects on optical components of a laser radar sensor designed for remote metrology in ITER

摘要

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/spl times/10/sup 6/ rad/h) during operation. We have tested the effect of radiation on a silica core polarization maintaining optical fiber and on TeO/sub 2/ crystals at doses up to -10/sup 9/ 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.