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Modal Wavefront Reconstruction for Radial Shearing Interferometer with Lateral Shear
Author(s): Gu, NT (Gu, Naiting); Huang, LH (Huang, Linhai); Yang, ZP (Yang, Zeping); Luo, Q (Luo, Qun); Rao, CH (Rao, Changhui)
Source: OPTICS LETTERS Volume: 36 Issue: 18 Pages: 3693-3695 Published: SEP 15 2011
Abstract: In a radial shearing interferometer, a portion of the test beam is magnified and used as the reference for the tested wavefront. However, the reference portion is always off center (lateral shear), which complicates the wavefront reconstruction. A modal method for solving this problem is presented here. This method uses orthogonal Zernike polynomials and its matrix formalism to calculate the Zernike coefficient of the wavefront under test. This approach has easier implementation, is better filtering, and has a more adaptive practical situation. The corresponding mathematical formula is deduced, and a computer simulation is also made to verify operation of the algorithm. The result of simulation analysis shows that the proposed method is correct and accurate. (C) 2011 Optical Society of America
Addresses: [Gu, NT; Huang, LH; Yang, ZP; Luo, Q; Rao, CH] Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China
[Gu, NT; Huang, LH; Yang, ZP; Luo, Q; Rao, CH] Chinese Acad Sci, Key Lab Adapt Opt, Chengdu 610209, Peoples R China
[Gu, NT] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
[Luo, Q] Natl Univ Def Technol, Coll Optoelect Sci & Engn, Changsha 410073, Peoples R China
Reprint Address: Gu, NT (reprint author), Chinese Acad Sci, Inst Opt & Elect, POB 350, Chengdu 610209, Peoples R China
E-mail Address: gnt7328@163.com
IDS Number: 821BZ
Source: OPTICS LETTERS Volume: 36 Issue: 18 Pages: 3693-3695 Published: SEP 15 2011
Abstract: In a radial shearing interferometer, a portion of the test beam is magnified and used as the reference for the tested wavefront. However, the reference portion is always off center (lateral shear), which complicates the wavefront reconstruction. A modal method for solving this problem is presented here. This method uses orthogonal Zernike polynomials and its matrix formalism to calculate the Zernike coefficient of the wavefront under test. This approach has easier implementation, is better filtering, and has a more adaptive practical situation. The corresponding mathematical formula is deduced, and a computer simulation is also made to verify operation of the algorithm. The result of simulation analysis shows that the proposed method is correct and accurate. (C) 2011 Optical Society of America
Addresses: [Gu, NT; Huang, LH; Yang, ZP; Luo, Q; Rao, CH] Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China
[Gu, NT; Huang, LH; Yang, ZP; Luo, Q; Rao, CH] Chinese Acad Sci, Key Lab Adapt Opt, Chengdu 610209, Peoples R China
[Gu, NT] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
[Luo, Q] Natl Univ Def Technol, Coll Optoelect Sci & Engn, Changsha 410073, Peoples R China
Reprint Address: Gu, NT (reprint author), Chinese Acad Sci, Inst Opt & Elect, POB 350, Chengdu 610209, Peoples R China
E-mail Address: gnt7328@163.com
IDS Number: 821BZ
