WHAT DOES HGGA2S4 CRYSTAL MEAN?

With the arrival of recent nonlinear materials and solitary-frequency pump resources, There's renewed curiosity in optical parametric oscillators (OPOs). Just one-method diode-laser-pumped monolithic Nd:YAG nonplanar ring laser that is definitely both amplified and frequency doubled is used to pump a monolithic MgO:LiNbO3 pulsed singly resonant OPO