[1] [1] T. Murakami, K. Ohtaki, H. Matsubara, T. Yamawaki, H. Saito, K. Isshiki, Y. Kokubo, A. Shima, H. Kumabe, and W. Susaki, IEEE J. Quantum Electron. QE-23, 712 (1987).

[2] [2] A. Al-Muhanna, L. J. Mawst, D. Botez, D. Z. Garbuzov, R. U. Martinelli, and J. C. Connolly, Appl. Phys. Lett. 73, 1182 (1998).

[3] [3] G. Lin, S. Yen, and C. Lee, IEEE Photon. Technol. Lett. 8, 1588 (1996).

[4] [4] G. Yang, G. M. Smith, M. K. Davis, A. Kussmaul, D. A. S. Loeber, M. H. Hu, H.-K. Nguyen, C.-E. Zah, and R. Bhat, IEEE Photon. Technol. Lett. 16, 981 (2004).

[5] [5] T. Temmyo and M. Sugo, Electron. Lett. 31, 642 (1995).

[6] [6] H.Wenzel, F. Bugge, G. Erbert, R. Hulsewede, R. Staske, and G. Trankle, Electron. Lett. 37, 1024 (2001).

[7] [7] M. C. Wu, Y. K. Chen, M. Hong, J. P. Mannaerts, M. A. Chin, and A. M. Sergent, Appl. Phys. Lett. 59, 1046 (1991).

[8] [8] Y. C. Chen, R. G. Waters, and R. J. Dalby, Electron. Lett. 26, 1348 (1990).

[9] [9] M. V. Maximov, Y. M. Shernyakov, I. I. Novikov, L. Y. Karachinsky, N. Y. Gordeev, U. Ben-Ami, D. Bortman-Arbiv, A. Sharon, V. A. Shchukin, and N. N. Ledentsov, IEEE J. Sel. Top. Quantum Electron. 14, 1113 (2008)

[10] [10] B. S. Ryvkin and E. A. Avrutin, J. Appl. Phys. 97, 113106 (2005).

[11] [11] B. S. Ryvkin and E. A. Avrutin, J. Appl. Phys. 97, 123103 (2005).

[12] [12] B. S. Ryvkin and E. A. Avrutin, J. Appl. Phys. 98, 026107 (2005).

[13] [13] B. S. Ryvkin and E. A. Avrutin, J. Appl. Phys. 105, 103107 (2009).

[14] [14] K. C. Kim, Il Ki Han, Y. C. Yoo, Jung Il Lee,Y. M. Sung, and T. G. Kim, IEEE T. Nanotechnol 7, 135(2008)

[15] [15] K. C. Kim, D.-K. Jang, Jung Il Lee, T. G. Kim, W. W. Lee, J. H. Kim, E. J. Yang, B. J. Koo, and Il Ki Han, IEEE Photon. Technol. Lett. 21, 1438 (2009).

[16] [16] D. Botez, Appl. Phys. Lett. 74, 3102 (1999).

[17] [17] M. Levy, Y. Karni, N. Rapaport, Y. Don, Y. Berk, D. Yanson, and S. Cohen, Proc. SPIE 7583, 75830J (2010).

[18] [18] Z. Xu, W. Gao, L. Cheng, K. Luo, K. Shen, and A. Mastrovito, Proc. SPIE 6909, 69090Q (2008).

[19] [19] B. Corbett, P. Lambkin, J. O'Callaghan, S. Deubert, W. Kaiser, J. P. Reithmaier, and A. Forche, IEEE Photon. Technol. Lett. 19, 916 (2007).

[20] [20] Y. Cao, "Al-free High Power and High Brightness Diode Lasers" (in Chinese) PhD. Thesis (Institute of Semiconductor Chinese Academy of Sciences, 2006).