[1] [1] D. J. Hagan, E. W. van Stryland, M. J. Soileau et al.. Semiconductor optical limiters with large dynamic range[J]. J. Opt Soc. Am. B, 1986, 3:105-110

[2] [2] J. D. Bhawalkar, G. S. He, P. N. Prasad. Nonlinear multiphoton processes in organic and polymeric materials[J]. Rep. Prog. Phys., 1996, 1041-1070

[3] [3] E. W. van Stiyland, H. van Herzeele, M. A. WoodaU et al.. Two-photon absorption, nonlinear refraction, and optical limiting in semiconductors[J]. Opt. Eng., 1985, 24:613-623

[4] [4] M. S. Bahae, A. A. Said, Τ. H. Wei et al.. Sensitive Measurement of Optical Nonlinearities Using a Single Beam [J]. IEEE J. Quantum Electron., 1990, 26(4):760-769