Method of evaluation of a mirror surface figure based on frequency domain and its application for the Giant Steerable Science Mirror of the Thirty Meter Telescope [Cover Paper]
We propose a sub-aperture stitching algorithm based on a frequency domain that can be denoted as a power spectral density (PSD). Our algorithm is verified by the experimental data obtained from measuring a \phi 1.23 m mirror at the Changchun Institute of Optics, Fine Mechanics and Physics. Then, we apply it to the Great Steering Science Mirror (GSSM) of the Thirty Meter Telescope (TMT) with the simulated data before the preliminary design phase, and obtain a more objective result on the frequency domain aberrations. Therefore, the sub-aperture stitching-based PSD is expected to be useful for specifying a large aperture mirror surface for mirror vendors.
Guojun Liu：State Key Laboratory of High Power Semiconductor Lasers, Changchun University of Science and Technology, Changchun 130022, China
Qichang An：Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
Xuejun Zhang：Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
备注：This work was supported by the National Natural Science Foundation of China (NSFC) under Grant No. 11403022.
【1】TMT Group, "Tertiary Mirrorsurface Figure Specification," TMT. OPT.SPE.12.001.DRF02 (2012).
【2】TMT Group, "Design Requirements Document for Tertiary Mirror System (M3S)," TMT.OPT.DRD.07.006.REL29 (2012).
【3】Y. Bi, J. Zhai, J. Wu, and Q. Hu, J. Opt. Tech. 35, 10 (2009).
【4】W. Zhang, J. Liu, F. Long, and Z. Wang, J. Opt. Tech. 31, 675 (2005).
【5】J. Chen, "Principles of Astronomical Telescope Design," (M. China Science & Technology Press, 2003).
【7】W. Dierking, Proc. IEEE 38, 1451 (2000).
【8】R. Zhelem, Proc. SPIE 8083, 808310 (2011).
Fei Yang, Guojun Liu, Qichang An, Xuejun Zhang, "Method of evaluation of a mirror surface figure based on frequency domain and its application for the Giant Steerable Science Mirror of the Thirty Meter Telescope," Chinese Optics Letters 13(4), 041201 (2015)
【1】Tingyu Yan,Chunmin Zhang,Qiwei Li,Yutong Wei,and Jirui Zhang. Efficient background removal based on two-dimensional notch filtering for polarization interference imaging spectrometers. Chinese Optics Letters, 2016, 14(12): 123002-123006
【1】Qi-chang An, Jing-xu Zhang, Fei Yang, Hong-chao Zhao, Liang Wang. Performance improvement of the Giant Steerable Science Mirror prototype: calibration, added-on damping treatment, and warping harness. Applied Optics, 2017, 56(36): 10009
【3】Fengzhao Dai, Yazhong Zheng, Yang Bu, Xiangzhao Wang. Zernike polynomials as a basis for modal fitting in lateral shearing interferometry: a discrete domain matrix transformation method. Applied Optics, 2016, 55(22): 5884