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DKDP & KDP Crystal
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DKDP & KDP Crystal

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Characterized by good UV transmission, high damage threshold, and high birefringence, Potassium Dihydrogen Phosphate (KDP) and Potassium Dideuterium Phosphate (DKDP ) are among the most widely-used commercial NLO materials, though their NLO coefficients are relatively low. They are usually used for the doubling, tripling and quadrupling of Nd:YAG laser at room temperature. They are also excellent E-O crystals with high E-O coefficients, widely used as electro-optical modulators, such as Q-switches, Pockels Cells, etc.
KDP and DKDP crystals are developed by water-solution method and can grow up to very big size. Therefore, they are good options for low-cost and large-size finished non-linear components, e.g. for frequency-doubling (SHG), frequency-tripling (THG) and frequency- quadrupling (FHG) of Nd:YAG laser at 1064nm.

 

THATSHIGH Specifications for DKDP Crystal


Dimension Tolerance

(W±0.1mm) × (H±0.1mm) × (L+0.2mm/-0.1mm) or (Dia. ± 0.1mm) ×(L+0.2/-0.1mm)

Wavefront Distortion

< λ/8 @ 633nm

Clear Aperture

> 90% of central area

Chamfer

≤0.3mm @45°

Flatness

λ/8 @ 633 nm (L≥ 2.5mm); λ/4 @ 633nm (L< 2.5mm)

Chip

≤ 0.1mm

Surface Quality [S/D]

20/10

Parallelism

< 10"

Perpendicularity

≤ 10'

Angle Tolerance

≤ 0.2°

Damage Threshold

1GW/cm2 for 1064nm, 10ns, 10Hz (uncoated)

Interior Quality

No visible scattering paths or centers [inspected by 50mW green laser]

 

Keyword:
DKDP crystal
KDP crystal
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