Volume 3 Issue 6
Dec.  2010
Turn off MathJax
Article Contents
YU Jie. Weighted least square phase extraction algorithm for phase-shifting point diffraction interferometer[J]. Chinese Optics, 2010, 3(6): 605-615.
Citation: YU Jie. Weighted least square phase extraction algorithm for phase-shifting point diffraction interferometer[J]. Chinese Optics, 2010, 3(6): 605-615.

Weighted least square phase extraction algorithm for phase-shifting point diffraction interferometer

  • Received Date: 22 May 2010
  • Rev Recd Date: 25 Jul 2010
  • Publish Date: 20 Dec 2010
  • Existing phase extraction algorithms are just insensitive to some specifically error sources, which can't satisfy the requirements of optical testing for the high precision. An equal-phase interval multi-step phase-shifting algorithm, weighted least square algorithm with underdetermined weight, was introduced. By introducing undetermined weights to the least square algorithm and by analysing the effect of manifold error sources on the algorithm in phase-shifting point diffraction interferometer, several groups of bound equations were obtained and the undetermined weights and the new phase extraction algorithm were determined by solving these bound equations. The new phase extraction algorithm was compared with standard four-step algorithm and Hariharan five-step algorithm. The results illuminate that the new phase extraction algorithm is much more insensitive to the linearity and nonlinearity of second order of PZT, intensity fluctuation in linearity and nonlinearity of 2nd order, linearity and nonlinearity of 2nd order of frequency of light source fluctuation. The results also illunimate that the new algorithm have advantages over other two algorithms in eliminating the CCD quantization, intensity noise, and the frequency noise. Moreover, the new algorithm is insensitive to the CCD nonlinearity at all.

     

  • loading
  • [1] BRUNING J H,SCHREIBER H. Optical Shop Testing[M]. 3rd edition. Hoboken:A John Wiley & Sons,2007. [2] BRUNING J H,HERRIOTT D J,BALLAGHER J E,et al.. Digital wavefront measuring interferometer for testing optical surface and lenss[J]. Appl. Opt.,1974,13(11):2693-2703. [3] SOMMARGREN G E. Phase shifting diffraction interferometry for measure extreme ultraviolet optics[J]. OSA Trends Opt. Photonics,1999,4:108-112. [4] NOVAK J. Five-step phase-shifting algorithms with unknown values of phase shift[J]. Optik,2003,2(114):63-68. [5] NOVAK J,NOVAK P,MIKS A. Multi-step phase-shifting algorithms insensitive to linear phase shift errors[J]. Opt. Communications,2008,281:5302-5309. [6] TANG SH H. Generalized algorithm for phase shifting interferometry[J]. SPIE,1996,2860:34-44. [7] CAI L Z,LIU Q,YANG X L. Phase-shift extraction and wave-front reconstruction in phase-shifting interferometry with arbitrary phase steps[J]. Opt. Lett.,2003,28(19):1808-1810. [8] CAI L Z,LIU Q,YANG X L. Generalized phase-shifting interferometry with arbitrary unknown phase steps for diffraction objects[J]. Opt. Lett.,2004,29(2):183-185. [9] CREATH K. Error sources in phase-measuring interferometry[J]. SPIE, 1992,1720:428-435. [10] HARIHARAN P,OREB B F,EIJU T. Digital phase-shifting interferometry:a simple error-compensating phase calculation algorithm[J]. Appl. Opt.,1987,26(13):2504-2506. [11] SCHWIDER J,BUROW R,ELSSNER K-E,et al.. Digital wave-front measuring interferometry:some systematic error sources[J]. Appl. Opt.,1983,22(21):3421-3432. [12] 程万杰,赵杰,蔡鹤皋. CCD像素响应非均匀的校正方法[J]. 光学 精密工程 ,2008,16(2):314-318. CHENG W J,ZHAO J,CAI H G. Correction method for pixel response nonuniformity of CCD [J]. Opt. Precision Eng.,2008,16(2):314-318.(in Chinese) [13] PHILLION D W. General methods for generating phase-shifting interferometry algorithms[J]. Appl. Opt.,1997,36(31):8098-8115. [14] BROPHY P. Effect of intensity error correlation on the computed phase of phase-shifting interferometry[J]. Opt. Soc. Am. A,1990,7(4):537-541.
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索
    Article views(4936) PDF downloads(1741) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return