Due to possessing large nonlinear coefficients (d*6=*5pm/V), wide
infrared transparency range(0.****2μm), high thermal
conductivity(0.*5W/(cm·K)), high laser damage threshold
(**5J/cm2)and well machining property, ZnGeP2 crystal was
called the king of infrared nonlinear optical crystals and is still
the best frequency conversion material for high power, tunable
infrared laser generation.
Due to these unique properties, it is known as one of the most
promising materials for nonlinear optical applications. ZGP can
generate **5 μm continuous tunable laser out put through the
optical parametric oscillation (OPO) technology. Lasers, operating
in the atmospheric transmission window of **5 μm are of great
importance for many applications, such as infrared counter measure,
chemical monitoring, medical apparatus, and remote sensing.
