LITTLE KNOWN FACTS ABOUT HGGA2S4 CRYSTAL.

With the advent of latest nonlinear products and single-frequency pump sources, There exists renewed fascination in optical parametric oscillators (OPOs). Just one-mode diode-laser-pumped monolithic Nd:YAG nonplanar ring laser that is equally amplified and frequency doubled is utilized to pump a monolithic MgO:LiNbO3 pulsed singly resonant OPO.The