[1] M. E. Wagshul and T. E. Chupp, Phys. Rev. A 40, 4447 (1989).
[2] B. Zhdanov and R. J. Knize, Opt. Lett. 32, 2167 (2007).
[3] R. H. Page, R. J. Beach, and V. K. Kanz, Opt. Lett. 31, 353 (2006).
[4] J. Zweiback and W. F. Krupke, Opt. Express 18, 1444 (2010).
[5] Z. Yang, H. Wang, Q. Lu, Y. Li, and X. Xu, Chinese J. lasers (in Chinese) 37, 2502 (2010).
[6] E. Babcock, B. Chann, I. A. Nelson, and T. G. Walker, Appl. Opt. 44, 3098 (2005).
[7] C. L. Talbot, M. E. J. Friese, D. Wang, I. Brereton, N. R. Heckenberg, and H. Rubinsztein-Dunlop, Appl. Opt. 44, 6264 (2005).
[8] Z. Su, Q. Lou, J. Dong, J. Zhou, and Y. Wei, Chinese J. Lasers (in Chinese) 34, 751 (2007).
[9] B. V. Zhdanov, T. Ehrenreich, and R. J. Knize, Electron. Lett. 43, 221 (2007).
[10] W. F. Krupke, R. J. Beach, V. K. Kanz, and S. A. Payne, Opt. Lett. 28, 2336 (2003).
[11] G. A. Pitz and G. P. Perram, Proc. SPIE 7005, 700526 (2008).
[12] J. Zweiback and B. Krupke, Proc. SPIE 7005, 700525 (2008).
