1. |
S. R. Grefenshteĭn, M. A. Kharchenko, V. V. Shuvalov, “Tunable picosecond LiF:$F_2^+$ oscillator synchronously pumped by second harmonic pulses from a KGd(WO$_4$)$_2$:Nd$^{3+}$ laser”, Kvantovaya Elektronika, 17:7 (1990), 867–868 [Sov J Quantum Electron, 20:7 (1990), 787–788 ] |