[1] Shi Peiming, Yu Song, Liu Tao, Sheng Jing and Gu Wanyi, Opt. Lett. 34, 1339 (2009).
[2] Gong Y. D., Shum P., Tang D. Y., Lu C. and Guo X., Optics Express 11, 2480 (2003).
[3] Tchofo Dinda P. and Porsezian K., J. Opt. Soc. Am. B 27, 1143 (2010).
[4] Zhong Xianqiong, Xiang Anping, Cai Qing and Luo Li, Chin. J. Laser 33, 1200 (2006). (in Chinese)
[5] Li Xiaoli, Zhang Lianshui, Zhang Wei, Yang Lijun and Li Xiaowei, Journal of Optoelectronics·Laser 22, 149 (2011). (in Chinese)
[6] Dong Jianfeng and Yang Fangqing, Journal of Optoelectronics ·Laser 22, 237 (2011). (in Chinese)
[7] Kourakis I. and Shukla P. K., Phys. Rev. E 72, 016626 (2005).
[8] Latchio Tiofack C. G., Mohamadou A., Alim Porsezian K. and Timoleon C. Kofane, J. Mod. Optics 59, 972 (2012).
[9] Dai Xiaoyu, Wen Shuangchun and Xiang Yuanjiang, Acta Phys. Sin. 57, 186 (2008). (in Chinese)
[10] Wen Shuangchun, Wang Youwen, Su Wenhua, Xiang Yuanjiang, Fu Xiquan and Fan Dianyuan, Phys. Rev. E 73, 036617 (2006).
[11] Xiang Yuanjiang, Dai Xiaoyu, Wen Shuangchun and Fan Dianyuan, J. Opt. Soc. Am. B 28, 908 (2011).
[12] Zhong Xianqiong, Optoelectronic Letters 8, 157 (2012).
[13] Maluckov A., Had ievski Lj, Lazarides N. and Tsironis G. P., Phys. Rev. E 77, 046607 (2008).
[14] Zhong Xianqiong, Tang Tingting, Xiang Anping and Cheng Ke, Opt. Commun. 284, 4727 (2011).
[15] Zhong Xianqiong, Cheng Ke and Xiang Anping, Chin. Phys. B 22, 034205 (2013).