KTP, Potassium Titanyl Phosphate

KTiOPO₄

KTP (Potassium Titanyl Phosphate, KTiOP₄) is a nonlinear optical material which combines excellent nonlinear and electro-optic properties. It has a relatively high damage threshold, large optical nonlinearity and excellent thermal stability.

KTP is most commonly used as an extra- or intra- cavity frequency doubler for Nd:YAG and other neodynium doped lasers. It is best suited to low and medium power laser systems as there is a susceptibility to grey tracking at higher powers.

It is also used frequently used as an optical parametric oscillator for near IR generation up to 4 µm and is particularly suited to high power operation as an optical parametric oscillator due to its high damage threshold and large crystal aperture.

Roditi supplies KTP crystals in a variety of sizes, up to 20mm in length with apertures up to 10 x 10mm. A standard range of AR/HRcoatings are available and custom coatings are available on request.