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Doping ZnO in Fe:LiNb03, Zn:Fe:LiNb03 was grown by Czochralski method. The diffraction efficiency and response time were measured and the photoconduction was calculated. The doped ions and their concentration influences on response time were investigated. The photo scattering resistance ability was measured and the mechanism was investigated.

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The large aperture mirror surface test is the basis of optical processing and alignment, and is also the key to the development of remote sensing device. The simulation results show that the RMS values of 1.07 m primary mirror with multi-point support and sling support are 1.86 nm and 3.28 nm respectively. Using 36 point unloading device, sponge 36 point free support and sling support to test the mirror surface, the results are basically consistent, RMS is better than 0.02λ (λ = 632.8 nm).