[2] [2] Fedin A V, Basiev T T, Rulev A V, et al. SPIE, 2002, 4644: 293.

[3] [3] Baburin N V, Galagan B E, Yu K Danikeiko, et al. Quantum Electronics, 2001, 31(4): 303.

[4] [4] Bruno Labranche, Wu Qun, Galarneau Pierre. SPIE, 1998, 2041: 326.

[5] [5] Maeda K, Wada N, Umino M, et al. Jap. J. Appl. Phys., 1984, 23(10): 759.

[7] [7] Bhatt R, Kar S, Bartwall K S, et al. Solid State Communications, 2003, 127: 457.

[11] [11] Jorgensen C K, Reisfeld R, et al. J. Less Common Metals, 1983, 93: 107.

[12] [12] Ke szei B, Paite J, Vandlik J, et al. J. Cryst. Growth, 2001, 226(1): 95.