[1] [1] T. Ditmire, A. M. Rubenchik, M. D. Perry. Effects of cubic nonlinearity on frequency doubling of high-power laser pulses. J. Opt. Soc. Am. B, 1996, 13(4):649～655

[2] [2] J. Y. Zhang, J. Y. Huang, H. Wang et al.. Second-harmonic generation from regeneratively amplified femtosecond laser pulses in BBO and LBO crystals. J. Opt. Soc. Am. B, 1998, 15(1):200～209

[3] [3] A. A. Zozulya, S. A. Diddams, A. G. V. Engen et al.. Propagation Dynamics of intense femtosecond pulses: Multiple splittings, coalescence, and continuum generation. Phys. Rev. Lett., 1999, 82(7):1430～1433

[4] [4] J. K. Ranka, A. L. Gaeta. Breakdown of the slowly varying envelope approximation in the self-focusing of ultrashort pulses. Opt. Lett., 1998, 23(7):534～536

[5] [5] R. Desalvo, A. A. Said, D. J. Hagan et al.. Infared to ultraviolet measurements of two-photon absorption and n2 in wide bandgap solids. IEEE J. Quantum Electron., 1996, 32(8):1324～1333

[6] [6] S. Bian. Estimation of photovoltaic field in LiNbO3 crystal by Z-scan. Opt. Commun., 1997, 141(5,6):292～297

[7] [7] I. Kang, T. Krauss, F. Wise. Sensitive measurement of nonlinear refraction and two-photon absorption by spectrally resolved two-beam coupling. Opt. Lett., 1997, 22(14):1077～1079

[8] [8] M. Sheik-Bahae, A. A. Said, E. W. Van Stryland. High-sensitivity, single-beam n2 measurements. Opt. Lett., 1989, 14(17):955～957

[9] [9] J. Wang, M. Sheik-Bahae, A. A. Said et al.. Time-resolved Z-scan measurements of optical nonlinearities. J. Opt. Soc. Am. B, 1994, 11(6):1009～1017

[10] [10] R. De Salvo, D. J. Hagan, M. Sheik-Bahae et al.. Self-focusing and self-defocusing by cascaded second-order effects in KTP. Opt. Lett., 1992, 17(1):28～30

[11] [11] R. Adair, L. L. Chase, S. A. Payne. Nonlinear refractive index of optical crystals. Phys. Rev. B, 1989, 39(5):3337～3350