[1] T. Y. Fan, G. Huber, and R. L. Byer, IEEE J. Quantum Electron. 24, 924 (1988).
[2] B. T. Mcguckin, T. Robert, and Menzies, IEEE J. Quantum Electron. 28, 1025 (1992).
[3] P. J. Morris, W. Luthy, and H. P. Weber, Opt. Commun. 111, 493 (1994).
[4] V. Sudesh and K. Asai, J. Opt. Soc. Am. B 20, 1829 (2003).
[5] Y. Z. Wang and X. L. Zhang, Chin. Opt. Lett. 1, 281 (2003).
[6] B. Q. Yao and L. Q. Dong, Acta Opt. Sin. (in Chinese) 24, 79 (2004).
[7] C. P. Wyss and W. Luthy, Opt. Commun. 153, 63 (1998).
[8] C. P. Wyss, W. Luthy, H. P. Weber, Appl. Phys. B 67, 545 (1998).