[1] R. Szipocs, K. Ferencz, C. Spielmann, and F. Krausz, Opt. Lett. 19, 201 (1994).

[2] V. Pervak, C. Teisset, A. Sugita, S. Naumov, F. Krausz, and A. Apolonski, Opt. Express 16, 10220 (2008).

[3] V. Pervak, A. Tikhonravov, M. Trubetskov, S. Naumov, F. Krausz, and A. Apolonski, Appl. Phys. B 87, 5 (2007).

[4] R. Chen, F. Wang, and Z. Wang, Chin. Opt. Lett. 6, 310 (2008).

[5] M. Trubetskov, A. Tikhonravov, and V. Pervak, Opt. Express 16, 20637 (2008).

[6] V. Yakovlev and G. Tempea, Appl. Opt. 41, 6514 (2002).

[7] J. Kennedy, R. Eberhart, and Y. Shi, Swarm Intelligence (Morgan Kaufmann Publishers, San Frasisco, 2001).

[8] B. Birge, in Proceedings of IEEE Swarm Intelligence Symposium 2003 182 (2003).

[9] M. Clerc, in Proceedings of the IEEE Congress on Evolutionary Computation 3, 1951 (1999).

[10] M. Saremi and R. Magnusson, Opt. Lett. 32, 894 (2007).

[11] A. Carlisle and G. Dozier, in Proceeding of the 5th Biannual World Automation Congress 13, 265 (2002).

[12] Z. Luo, X. Liu, W. Shen, H. Xue, P. Gu, and Y. Zhang, Acta Opt. Sin. (in Chinese) 29, 2619 (2009).

[13] G. Steinmeyer, Opt. Express 11, 2385 (2003).

[14] O. Nohadani, J. Birge, F. Kartner, and D. Bevtsimas, Appl. Opt. 47, 2630 (2008).

[15] V. Pervak, I. Ahmad, J. Fulop, Opt. Express 17, 2207 (2009).