[1] [1] Bartels, R. Cerna, C. Kistner, A. Thoma, F. Hudert, C. Janke, and T. Dekorsy, Rev. Sci. Instrum. 78, 351071(2007).

[2] [2] S. T. Cundiff, Nature 450, 1175 (2007).

[3] [3] W. H. Knox, IEEE J. Sel. Top. Quantum Electron. 6,1273 (2000).

[4] [4] X. Yu, H. A. Haus, E. P. Ippen, W. S. Wong, and A. Sysoliatin, Opt. Lett. 25, 1418 (2000).

[5] [5] T. M. Fortier, A. Bartels, and S. A. Diddams, Opt. Lett. 31, 1011 (2006).

[6] [6] D. Kim, J. N. Kutz, and D. J. Muraki, IEEE J. Sel. Top. Quantum Electron. 36, 465 (2000).

[7] [7] U. Keller, Nature 424, 831 (2003).

[8] [8] F. Bonaccorso, Z. Sun, T. Hasan, and A. C. Ferrari, Nat. Photon. 4, 611 (2010).

[9] [9] Q. Bao, H. Zhang, Y. Wang, Z. Ni, Y. Yan, Z. X. Shen, K. P. Loh, and D. Y. Tang, Adv. Funct. Mater. 19, 3077 (2009).

[10] [10] Y. Dai and C. Xu, Opt. Express 17, 6584 (2009).

[11] [11] J. van Home, J. H. LEE, and C. Xu, Opt. Lett. 32, 1408 (1999).

[12] [12] T. Khayim and M. Yamauchi, Quantum Electron. 35, 1412 (1999).

[13] [13] Y. Wang, J. Wang, Y. Jiang, Y. Bao, X. Li, and Z. Lin, Chin. Opt. Lett. 6, 841 (2008).

[14] [14] R. Xin and J. D. Zuegel, Opt. Lett. 36, 2605 (2011).

[15] [15] R. Xin and J. D. Zuegel, in Proceedings of ASSP 2010 AMD3 (2010).

[16] [16] H. N. Tan, Q. Nguyen-The, M. Matsuura, and N. Kishi, J. Lighwave Technol. 30, 853 (2012).