[3] Beutler H G. J. Opt. Soc. Am., 1945, 35(5): 311.
[4] Lobb D R. Appl. Opt., 1994, 33: 2648.
[5] Warren D W, Gutierrez D J, Keim E R. Opt. Eng., 2008, 47: 103601.
[6] Mouroulis P, Green R O, Wilson D W. Opt. Express., 2008, 16: 9087.
[7] Lucke R, Fisher J. Proc. SPIE, 2010, 7812: 78120M.
[8] Johnson W R, Hook S J, Shoen S M. Opt. Lett., 2012, 37(5): 803.
[9] Montero-Orille C, Prieto-Blance X, Gonzalez-Nunez H, et al. Opt. Lett., 2010, 35(14): 2379.