[1] Y. Lu, H. Tan, and L. Qin, Chin. Opt. Lett. 4, 25 (2006).
[2] D. Xue, Q. Lou, J. Zhou, L. Kong, J. Li, and S. Li, Chin. Opt. Lett. 3, 345 (2005).
[3] J. Zhou, T. Yu, J. Bi, X. Zhu, and W. Chen, Chin. Opt. Lett. 4, 292 (2006).
[4] X. Ye, T. Fang, Z. Wang, S. Dai, and J. Xu, Chin. Opt. Lett. 3, 527 (2005).
[5] B. Lu and H. Ma, Appl. Opt. 39, 1279 (2000).
[6] Y. Kono, M. Takeoka, K. Uto, A. Uchida, and F. Kannari, IEEE J. Quantum Electron. 36, 607 (2000).
[7] A. Brignon and J.-P. Huignard, (eds.) Phase Conjugate Laser Optics (John Wiley and Sons, Inc., New Jersey, 2004).
[8] Q. Peng, Y. Zhou, Y, Chen, Z. Sun, Y. Bo, X. Yang, Z. Xu, Y. Wang, K. Li, and W. Zhao, Electron. Lett. 41, 171 (2005).
[9] G. D. Goodno, H. Komine, S. J. McNaught, S. B. Weiss, S. Redmond, W. Long, R. Simpson, E. C. Cheung, D. Howland, P. Epp, M. Weber, M. McChlellan, J. Sollee, and H. Injeyan, Opt. Lett. 31, 1247 (2006).
[10] A. Shirakawa, T. Saitou, T. Sekiguchi, and K. Ueda, Opt. Express 10, 1167 (2002).
[11] Q. Peng, Z. Sun, Y. Chen, L. Guo, Y. Bo, X. Yang, and Z. Xu, Opt. Lett. 30, 1485 (2005).
[12] B. He, Q. Lou, J. Zhou, J. Dong, Y. Wei, D. Xue, Y. Qi, Z. Su, L. Li, and F. Zhang, Opt. Express 14, 2721 (2006).
[13] B. Colombeau, M. Vampouille, V. Kermene, A. Desfarges, and C. Froehly, Pure Appl. Opt. 3, 757 (1994).
[14] Y. Zhou, L. Liu, C. Etson, Y. Abranyos, A. Padilla, and Y. Chen, Appl. Phys. Lett. 84, 3025 (2004).