[1] Y. Nabekawa, K. Kuramoto, T. Togashi, T. Sekikawa, and S. Watanabe, Opt. Lett. 23, 1384 (1998).
[2] S. Konno, T. Kojima, S. Fujikawa, and K. Yasui, Opt. Lett. 25, 105 (2000).
[3] S. A. Babin, D. V. Churkin, A. E. Ismagulov, S. I. Kablukov, and M. A. Nikulin, Laser Phys. Lett. 4, 428 (2007).
[4] V. M. Paramonov, A. S. Kurkov, O. I. Medvedkov, and V. B. Tsvetkov, Laser Phys. Lett. 4, 740 (2007).
[5] M. W. Wright and G. C. Valley, J. Lightwave Technol. 23, 1369 (2005).
[6] V. Philippov, C. Codemard, and Y. Jeong, Opt. Lett. 29, 2590 (2004).
[7] F. J. Kontur, I. Dajani, and Y. Lu, Opt. Express 15, 12882 (2007).
[8] M. G. Pullen, J. J. Chapman, and D. Kielpinski, Appl. Opt. 47, 1397 (2004).
[9] C. D. Brooks and F. D. Teodoro, Opt. Commum. 280, 424 (2007)
[10] R. Horiuchi, K. Saiki, K. Adachi, K. Tei, and S. Yamaguchi, Opt. Rev. 15, 136 (2008).
[11] A. Kuznetsov and S. Babin, Laser Phys. 20, 1266 (2010).
[12] A. Denisov, A. Kuznetsov, D. Kharenko, S. Kablukov, and S. Babin, Laser Phys. 21, 277 (2011).
[13] P. Jiang, D. Yang, Y. Wang, T. Chen, B. Wu, and Y. Shen, Laser Phys. Lett. 6, 384 (2009).
[14] C. Ye, M. Gong, P. Yan, Q. Liu, and G. Chen, Opt. Express 14, 7604 (2006).
[15] C. Liu, Y. Qi, Y. Ding, J. Zhou, J. Dong, Y. Wei, and Q. Lou, Chin. Opt. Lett. 9, 031402 (2011).
[16] J. Limpert, S. Hofer, A. Liem, H. Zellmer, A. Tunnermann, S. Knoke, and H. Voelckel, Appl. Phys. B 75, 477 (2002).
[17] C. Ye, P. Yan, L. Huang, Q. Liu, and M. Gong, Laser Phys. Lett. 4, 376 (2007).
[18] A. Liu, M. A. Norsen, and R. D. Mead, Opt. Lett. 30, 67 (2005).
[19] C. H. Tu, Z. C. Huang, K. Lou, H. J. Liu, Y. S. Wang, Y. N. Li, F. Y. Lu, and H. T. Wang, Opt. Express 18, 25183 (2010).
[20] H. Sunaga, R. Horiuchi, K. Jyosui, K. Tei, S. Yamaguchi, K. Nanri, and T. Fujioka, Chin. Opt. Lett. 5, (Suppl.) S111 (2007).
[21] V. Philippov, A. Kir’yanov, and S. Unger, IEEE Photon Technol. Lett. 16, 57 (2004).
[22] P. Grelu, F. Belhache, F. Gutty, and J. M. Soto-Crespo, JOSA B 20, 863 (2003).
[23] P. Myslinski, J. Chrostowski, J. Koningstein, and J. R. Simpson, Appl. Opt. 32, 286 (1993).
