LITTLE KNOWN FACTS ABOUT HGGA2S4 CRYSTAL.

With the arrival of recent nonlinear resources and single-frequency pump resources, There may be renewed desire in optical parametric oscillators (OPOs). A single-mode diode-laser-pumped monolithic Nd:YAG nonplanar ring laser which is the two amplified and frequency doubled is accustomed to pump a monolithic MgO:LiNbO3 pulsed singly resonant OPO.A