Dokl. Akad. Nauk SSSR, 1973 Volume 212, Number 6,Pages 1326–1327(Mi dan50539)
PHYSICS
Laser properties of the $\mathrm{Y}_2\mathrm{SiO}_5$ – $\mathrm{Nd}^{3+}$ crystal with radiation
at transition lines $^4F_{3/2}\to^4I_{11/2}$ and $^4F_{3/2}\to^4I_{13/2}$