1. G. D. Nikishin, V. M. Stekhin, V. N. Smirnov, et al., in Collection of Articles (Vladivostok, 2002), p. 37 [in Russian].
2. S. V. Maksin, S. V. Popov, D. A. Bazlev, et al., RF Patent No. 2463200, Byull. Izobret. No. 28 (2012).
3. I. K. Babaev, V. V. Sinaiskii, and A. I. Finogenov, Laser and Optical Systems (Astrofizika, Moscow, 1994), p. 64 [in Russian].
4. V. E. Rogalin, Mater. Elektron. Tekh., No. 2, 11 (2013).
5. Yu. A. Anan’ev, Optical Cavities and Laser Beams (Nauka, Moscow, 1990) [in Russian].