[1] [1] X. Luo, H. Li. The optimum operation of an unified mini-optically pumped NH3 submillimeter wave laser [J]. Int. J. IR&MW, 1999, 20(2):203～212

[2] [2] C. O. Weiss, M. Fourer, C. Gastaud et al.. Optically pumped far-infrared ammia lasers, C-Reviews of Infrared and Millimeter Waves, ed. by K. J. Button et al. [M]. NY: Plenum Press, 1984, vol.2. 277～335

[3] [3] T. Y. Chang, C. Lin. Effects of buffer gases on an optically pumped CH3F FIR laser [J]. J. Opt. Soc. Am., 1976, 66(4):362～369

[4] [4] T. Okada, R. Behn, M. A. Dupertuis et al.. Numerical analysis of an optically pumped D2O far infrared laser [J]. J. Appl. Phys., 1983, 54(6):2987～2995

[5] [5] H. Li, X. Luo et al.. Effects of buffer gas on the output of optically pumped NH3 far-infrared cavity laser [J]. Int. J. IR&MMW, 2000, 21(5):771～780

[6] [6] X. Huang, X. Luo, H. Li et al.. Effect of buffer gas on the output of optically pumped NH3 far-infrared cavity laser [J]. Int. J. IR&MMW, 2000, 21(12):2015～2021