DKDP & KDP Crystal
Key words:
DKDP & KDP Crystal
Classification:
Product Description
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
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(W±0.1mm) × (H±0.1mm) × (L+0.2mm/-0.1mm) or (Dia. ± 0.1mm) ×(L+0.2/-0.1mm) |
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Wavefront Distortion |
< λ/8 @ 633nm |
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Clear Aperture |
> 90% of central area |
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Chamfer |
≤0.3mm @45° |
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Flatness |
λ/8 @ 633 nm (L≥ 2.5mm); λ/4 @ 633nm (L< 2.5mm) |
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Chip |
≤ 0.1mm |
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Surface Quality [S/D] |
20/10 |
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Parallelism |
< 10" |
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Perpendicularity |
≤ 10' |
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Angle Tolerance |
≤ 0.2° |
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Damage Threshold |
1GW/cm2 for 1064nm, 10ns, 10Hz (uncoated) |
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Interior Quality |
No visible scattering paths or centers [inspected by 50mW green laser] |
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