WHAT DOES HGGA2S4 CRYSTAL MEAN?

Optical parametric oscillator pumped at ~1 µm with intracavity mid-IR change-frequency era in OPGaAsA single observes a spectacular rise in technology of the 2nd harmonic along with the demodulation signals versus the pump wave amplitude. A clear correlation exists among these nonlinear signatures and the amount of damages. Preliminary determinati