Pf. Mead et al., SINGLE-MODE OPERATION OF DIODE-PUMPED ND-YAG LASERS BY PUMP-BEAM FOCUSING, IEEE journal of quantum electronics, 30(12), 1994, pp. 2902-2906
We present a theoretical study of the maximum single frequency power t
hat can be obtained from a simple coaxially end-pumped Nd:YAG laser, T
he approach is general for four-level solid-state laser systems. It is
shown that careful control of the pump beam geometry, cavity length,
and crystal length can enhance single frequency performance,