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KDP-DKDP Crystal

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KDP-DKDP Crystal
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Capabilities:

Width x Length: 1x1 ~ 16x16mm

Lenght: 0.02 ~ 20mm


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Product Features

 

01

Potassium Dihydrogen Phosphate (KDP) and Potassium Dideuterium Phosphate (KD*P ) are among the most widely-used commercial NLO materials. 

02

They are commonly used for doubling, tripling and quadrupling of Nd:YAG laser at the room temperature. 

03

In addition, they are also excellent electro-optic crystals with high electro-optic coefficients, widely used as electro-optical modulators, Q-switches, and Pockels Cells, etc.

Standard Wavelength

Specifications:


Angle tolerance:

Δθ< ± 0.5°; Δφ< ±0.5°

Dimensional Tolerance:

(W ± 0.1mm) x (H ± 0.1mm) x (L + 0.2mm/-0.1mm)

Flatness:

<λ/8 at 633nm

Surface Quality:

20/10 Scracth/Dig

Parallelism:

< 20 arc seconds

Perpendicularity:

< 5 arc minutes

Wavefront Distortion:

<λ/8 at 633nm

Clear Aperture:

Central 95%

Chamfer:

0.15x45°

Coating:

* Protective coating is required to prevent polished surfaces from fogging.

* Anti-reflective coating should be considered if low reflectivity is required.

Properties: 


KDP

KD*P

Chemical Formula

KH2PO4

KD2PO4

Transparency Range

200-1500nm

200-1600nm

Nonlinear Coefficients

d36=0.44pm/V

d36=0.40pm/V

Refractive Index (at 1064nm)

no=1.4938, ne=1.4599

No=1.4948, ne=1.4554

Electro-Optical Coefficients

r41=8.8pm/V 

r41=8.8pm/V

r63=10.3pm/V

r63=25pm/V

Longitudinal Half-Wave Voltage:

Vp=7.65KV(l=546nm)

Vp=2.98KV(l=546nm)

Absorptance:

0.07/cm

0.006/cm

Optical Damage Threshold:

>5 GW/cm2

>3 GW/cm2

Extinction Ratio:

30dB

30dB


Sellmeier Equations of KDP:

no2 = 2.259276 + 0.01008956/(λ2 - 0.012942625) + 13.005522λ2/(λ2 - 400) 

ne2 = 2.132668 + 0.008637494/(l2 - 0.012281043) + 3.2279924l2/(l2 - 400) 


Sellmeier Equations of DKDP

no2 = 1.9575544 + 0.2901391/(l2 - 0.0281399) - 0.02824391l2 +0.004977826l4

ne2 = 1.5005779 + 0.6276034/(l2 - 0.0131558) - 0.01054063l2 +0.002243821l4  



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