[1] [1] E. A. Seigman. Lasers. California: University Science Books, 1986.110-115

[3] [3] V. Magri. Resonators for solid lasers with large volume fundamental mode and high alignment stability. Appl. Opt., 1986, 25(1):924-926

[4] [4] Gan Fuxi, Deng Peizhen. Laser Materials. Shanghai: Shanghai Science and Technology Press, 1996. 270 (in Chinese)

[5] [5] W. Sikernell. Solid Laser Engineering. Science Press, 1983. 254-259