1. G. I. Farmer and Y. C. Kiang, ?Low-current-density LED-pumped YAG:Nd laser using a solid cylindrical reflector,? J. Appl. Phys.,45, No. 3, 1356?1371 (1974).
2. A. L. Zakgeim, Yu. M. Makushenko, V. M. Marakhonov, et al., ?Improvement in the output of Nd:YAG lasers with semiconductor pump systems,? Pis'ma Zh. Tekh. Fiz.,4, No. 12, 699?703 (1978).
3. I. S. Goldobin, G. M. Zverev, I. I. Kuratev, et al., ?Some characteristics of a YAG laser with light diode pumping,? Elektron. Tekh., Ser. II, Lazer. Tekh. Optoelektron., No. 1(7), 60?63 (1979).
4. II All-Union Conference on Laser Optics (4?8 January 1980): Summary Proceedings [in Russian], Leningrad (1979), p. 31.
5. B. I. Denker, A. A. Izyneev, I. I. Kuratev, et al., ?Lasing in phosphate glasses with a high concentration of neodymium ions using light diode pumps,? Kvantovaya Elektron. (Moscow),7, No. 9, 2017?2019 (1980).