WHAT DOES HGGA2S4 CRYSTAL MEAN?

With the appearance of recent nonlinear elements and solitary-frequency pump resources, There's renewed curiosity in optical parametric oscillators (OPOs). Only one-mode diode-laser-pumped monolithic Nd:YAG nonplanar ring laser that is each amplified and frequency doubled is accustomed to pump a monolithic MgO:LiNbO3 pulsed singly resonant OPO.A mo