[1] V. A. Arkhangel'skaya, P. P. Feofilov. Tunable lasers utilizing color centers in ionic crystals (review). Soy. J. Quantum. Electron., 1980, 10(6):657～667

[2] Yu. M. Alvazyan, L. V. Kazandzhyan, A. N. Kolerov et al.. Laser-radiation bleaching of LiF crystals containing color centers. Soy. J. Quantum. Electron., 1981, 11(9):1220～1221

[3] Yu. L. Gusev, A. V. Kirpichnikov, S. I. Marennikov et al.. Investigation of the spectral characteristics of a pulsed F2- center laser tunable in the range 1.1～1.26 tμ. Soy. J. Quantum. Electron., 1979, 9(12):1554～1556

[4] W. Gellermann, A. Muller, D. Wandt et al.. Formation, optical properties, and laser operation of F2- centers in LiF. J. Appl.Phys., 1987, 61(4):1297～1303

[5] ZHANG Guifen. Polarization characteristics of lasers with a LiF:F2- Q-switch. Chinese J. Laser, 1983, 10(3):207～209 (in Chinese)

[6] Yu. L. Gusev, S. N. Konoplin. Continuous-wave laser utilizing F2- centers in an LiF crystal. Soy. J. Quantum. Electron., 1981, 11(6):808～809

[7] ZHANG Guifen. LiF:F2- colour center laser. Chinese J. Laser, 1984, 11(4):196～198 (in Chinese)

[8] V. A. Buchenkov, A. G. Kalintsev, A. A. Mak et al.. Characteristics of YAG:Nd3 + lasers passively Q-switched by LiF crystals containing color centers. Soy. J. Quantum. Electron., 1981, 11(10):1367～1368

[9] Jeffrey A. Morris, Clifford R. Pollock. Passive Q switching of a diode-pumped Nd: AG laser with a saturable absorber. Opt. Lett., 1990, 15(8):440～442