[1] [1] V. V. Antsiferov, Techn. Phys. 45, 1085 (2000).

[2] [2] M. L Shand and J. C. Walling, IEEE J. Quantum Electron. 18, 1829 (1982).

[3] [3] J. Buchert, A. Katz, and R. R. Alfano, IEEE J. Quantum Electron. 19, 1477 (1983).

[4] [4] M. L. Shand and S. T. Lai, IEEE J. Quantum Electron. 20, 105 (1984).

[5] [5] R. R. Alfano and J. M. Buchert, Chromium-doped beryllium aluminum silicate laser systems U.S. Patent 4464761 (1984).

[6] [6] S. T. Lai, J. Opt. Soc. Am. B 4, 1286 (1987).

[7] [7] S. N. Barilo, G. L. Bychkov, L. A. Kurnevich, N. I. Leonuk, V. P. Mikhailov, S. V. Shiryaev, V. T. Koyava, and T. V. Smirnova, J. Cryst. Growth 198/199, 716 (1999).

[8] [8] Z. Chen, G. Zhang, H. Shen, and C. Huang, J. Cryst. Growth 244, 339 (2002).

[9] [9] Z. Chen, J. Zeng, W. Zhong, and H. Shen, J. Synth. Cryst. (in Chinese) 31, 34 (2002).

[10] [10] Z. Chen, G. Zhang, C. Huang, and H. Shen, J. Inorganic Mater. (in Chinese) 17, 1129 (2002).

[11] [11] Z. Chen, H. Shen, G. Zhang, and C. Huang, Acta Photon. Sin. (in Chinese) 33, 382 (2004).

[12] [12] U. Fano, Phys. Rev. A 124, 1866 (1961).

[13] [13] Z. Chen, G. Zhang, H. Shen, C. Huang, W. Liu, and L. Huang, Chin. J. Lasers (in Chinese) 30, 843 (2003).