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OEM manufacturer Nd:Ylf - KDP & DKDP Crystal – WISOPTIC

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OEM manufacturer Nd:Ylf - KDP & DKDP Crystal – WISOPTIC Detail:

KDP (KH2PO) and DKDP/KD*P (KD2PO) are among the most widely-used commercial NLO materials. With good UV transmission, high damage threshold, and high birefringence, these material are usually used for doubling, tripling and quadrupling of Nd:YAG laser.

With high E-O coefficient, KDP and DKDP crystals are also widely used to make Pockels cells for laser system, such as Nd:YAG, Nd:YLF, Ti-Sapphire, Alexandrite, etc. Even though DKDP with high deuteration is more commonly used, KDP and DKDP both can do phase matching of type I and type II for the SHG and THG of 1064nm Nd:YAG laser. We recommend KDP for FGH of Nd:YAG laser (266nm).

As one of the major KDP/DKDP suppliers (source manufacturer) in the whole international market, WISOPTIC has high capability of material selection, processing (polishing, coating, gold-plating, etc). WISOPTIC confirms reasonable price, mass production, quick delivery and long guarantee period of these materials.

Contact us for the best solution for your application of KDP/DKDP crystals.

WISOPTIC Advantages - KDP/DKDP

• High deuteration ratio (>98.0%)

• High homogeneity

• Excellent internal quality

• Top finish quality with high processing precision

• Large block for various size and shapes

• Very competitive price

• Mass production, quick delivery

WISOPTIC Standard Specifications* - KDP/DKDP 

Deuteration Ratio > 98.00%
Dimension Tolerance ± 0.1 mm
Angle Tolerance ≤ ± 0.25°
Flatness < λ/8 @ 632.8 nm
Surface Quality < 20/10 [S/D] (MIL-PRF-13830B)
Parallelism < 20”
Perpendicularity ≤ 5′
Chamfer ≤ 0.2mm @ 45°
Transmitted Wavefront Distortion < λ/8 @ 632.8 nm
Clear Aperture > 90% of central area
Laser Damage Threshold > 500 MW for 1064nm, TEM00, 10ns, 10Hz (AR-coated)
> 300 MW for 532nm, TEM00, 10ns, 10Hz (AR-coated)
* Products with special requirement upon request.

dkdp
DKDPfe
KD-2

DOWNLOAD Technical Data – KDP & DKDP


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Main Features - KDP/DKDP

• Good UV transmission

• High optical damage threshold

• High birefringence

• High nonlinear coefficients

Primary Applications – KDP/DKDP

• Laser frequency conversion – Second, third, and fourth harmonic generation for high pulse energy, low repetition (<100 Hz) rate lasers

• Electro-optical modulation

• Q-switching crystal for Pockels cells

Physical Properties – KDP/DKDP

  Crystal KDP DKDP
Chemical formula KH2PO4 KD2PO4
Crystal structure I42d I42d
Space group Tetragonal Tetragonal
Point group 42m 42m
Lattice constants a=7.448 Å, c=6.977 Å a=7.470 Å, c=6.977 Å
Density 2.332 g/cm3 2.355 g/cm3
Mohs hardness 2.5 2.5
Melting point 253 °C 253 °C
Curie temperature -150 °C -50 °C
Thermal conductivity [W/(m·K)] k11= 1.9×10-2 k11= 1.9×10-2, k33= 2.1×10-2
Thermal expansion coefficients (K-1) a11= 2.5×10-5, a33= 4.4×10-5 a11= 1.9×10-5, a33= 4.4×10-5
Hygroscopicity high high

Optical Properties – KDP/DKDP

  Crystal KDP DKDP
Transparency region
(at “0” transmittance level)
176-1400 nm 200-1800 nm
Linear absorption coefficients
(@ 1064 nm)
0.04 /cm 0.005 /cm
Refractive indices (@1064 nm) no=1.4938, ne=1.4601 no=1.5066, ne=1.4681
NLO coefficients (@1064 nm) d36=0.39 pm/V d36=0.37 pm/V
Electro-optic coefficients r41=8.8 pm/V, r63=10.3 pm/V

r41=8.8 pm/V, r63=25 pm/V

Longitudinal half-wave voltage 7.65 kV (λ=546 nm) 2.98 kV (λ=546 nm)
SHG conversion efficiency 20~30% 40~70%

Phase matching angle for SHG of 1064 nm

KDP

DKDP

Type of phase matching Type 1 ooe Type 2 eoe Type 1 ooe Type 2 eoe
Cut angle θ 41.2° 59.1° 36.6° 53.7°
Acceptances for crystal of 1 cm length (FWHM):
Δθ (angle) 1.1 mrad 2.2 mrad 1.2 mrad 2.3 mrad
ΔΤ (thermal) 10 K 11.8 K 32.5 K 29.4 K
Δλ (spectral) 21 nm 4.5 nm  6.6 nm 4.2 nm
Walk-off angle 28 mrad 25 mrad 25 mrad 25 mrad

Product detail pictures:

OEM manufacturer Nd:Ylf - KDP & DKDP Crystal  – WISOPTIC detail pictures

OEM manufacturer Nd:Ylf - KDP & DKDP Crystal  – WISOPTIC detail pictures

OEM manufacturer Nd:Ylf - KDP & DKDP Crystal  – WISOPTIC detail pictures

OEM manufacturer Nd:Ylf - KDP & DKDP Crystal  – WISOPTIC detail pictures

OEM manufacturer Nd:Ylf - KDP & DKDP Crystal  – WISOPTIC detail pictures


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"Control the quality by the details, show the power by quality". Our enterprise has strived to establish a remarkably efficient and stable team team and explored an effective excellent control system for OEM manufacturer Nd:Ylf - KDP & DKDP Crystal – WISOPTIC, The product will supply to all over the world, such as: Durban, Suriname, Tunisia, We have a good reputation for stable quality products, well received by customers at home and abroad. Our company would be guided by the idea of "Standing in Domestic Markets, Walking into International Markets". We sincerely hope that we could do business with car manufacturers, auto part buyers and the majority of colleagues both at home and abroad. We expect sincere cooperation and common development!
  • The company's products very well, we have purchased and cooperated many times, fair price and assured quality, in short, this is a trustworthy company!
    5 Stars By Jessie from Israel - 2018.06.03 10:17
    This company conforms to the market requirement and joins in the market competition by its high quality product, this is an enterprise that have Chinese spirit.
    5 Stars By Queena from Hamburg - 2017.03.07 13:42

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