LITTLE KNOWN FACTS ABOUT HGGA2S4 CRYSTAL.

Optical parametric oscillator pumped at ~one µm with intracavity mid-IR change-frequency technology in OPGaAsWe report over a femtosecond optical parametric oscillator (OPO) with the deep-infrared (deep-IR) determined by the Kerr-lens-method-locked Ti:sapphire laser as being the pump resource. By deploying a novel cascaded intracavity arrangement,