Frequently Asked Questions

KTP stands for Potassium Titanyl Phosphate and it is widely used in both commercial and military lasers including laboratory and medical systems, range-finders, lidar, optical communication and industrial systems.

CASTECH's KTP crystals have a large nonlinear optical coefficient, wide angular bandwidth and small walk-off angle, broad temperature and spectral bandwidth, high electro-optic coefficient and low dielectric constant, large figure of merit, and are nonhydroscopic, chemically and mechanically stable.

The thermal expansion coefficient of KTP is αx=11x10-6/0C, αy=9x10-6/0C, αz=0.6x10-6/0C and the thermal conductivity is 13W/m/K.

KTP has promising E-O and dielectric properties that are comparable to LiNbO3, making it extremely useful to various E-O devices. It is expected to replace LiNbO3 crystal in the considerable volume application of E-O modulators.

CASTECH provides a DualBandAR-coating(DBAR)ofKTPforSHGof1064nm. It has low reflectance (R<0.2%at1064nmandR<0.5%at532nm), high damage threshold (>300MW/cm2atbothwavelengths), and long durability.

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