DKDP (KD*P) Crystals - Potassium Dideuterium Phosphate Crystal
 
Potassium Dideuterium Phosphate (DKDP or KD*P ) are among the most widely-used commercial NLO's crystals, characterized by good UV transmission, high damage threshold, and high birefringence, though their NLO coefficients are relatively low. They are usually used for doubling (SHG), tripling (THG) and quadrupling (FHG) of a Nd:YAG laser at the room temperature. In addition, they are also excellent electro-optic crystals with high electro-optic coefficients, makes it be widely used as electro-optical modulators, such as EO Q-switches, EO Pockels Cells, etc.

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