Potassium Dihydrogen Phosphate Crystal

Data sheet

Density	2.338 g/cm³ 2.355 g/cm³
Materials	KDP/DKDP

More info

Potassium Dihydrogen Phosphate (KDP) and Deuterated Potassium Dihydrogen Phosphate (DKDP) Crystals are known for their superior UV transmission, high damage threshold, and high birefringence. They are widely used for frequency conversion in Nd: YAG lasers and in electro-optic devices such as Q-switches and Pockels cells. Heeger Materials (HM) provides high-quality KDP/DKDP crystals with a wide transmission range of 200–2100 nm, making them ideal for advanced laser applications.

Potassium Dihydrogen Phosphate Crystal | KDP/DKDP Crystal

KDP/DKDP Crystal Properties

Item	DKDP	KDP
Chemical Formula	KD2PO4	KH2PO4
Crystal Structure	Tetragonal, 42m	Tetragonal, 42m
Crystal Parameters	a=7.448 Å, c=6.977 Å	a=7.4697 Å, c=6.966 Å
Optical Symmetry	Negative uniaxial (no>ne)	Negative uniaxial (no>ne)
Density	2.338 g/cm³	2.355 g/cm³
Mohs Hardness	2.5	2.5
Transparency Range	200-2100 nm (98% deuterium content)	200-1650 nm
Nonlinear Coefficients	d36 = 0.40 pm/V	d36 = 0.44 pm/V
Refractive Index (at 1064 nm)	no = 1.4948, ne = 1.4554	no = 1.4938, ne = 1.4599
Electro-optic Coefficients	r41 = 8.8 pm/V r63 = 25 pm/V	r41 = 8.8 pm/V r63 = 10.3 pm/V
Longitudinal Half-wave Voltage	Vπ = 2.98 KV (λ = 546 nm)	Vπ = 7.65 KV (λ = 546 nm)
Absorption Coefficients	0.006 /cm	0.07 /cm
Damage Threshold	>3 GW/cm2	>5 GW/cm2
Extinction Ratio	30 dB
Sellmeier Equations of DKDP: (λ in µm)	no2 = 1.9575544 + 0.2901391 λ2 / (λ2 - 0.0281399) - 0.02824391 λ2 + 0.004977826 λ4 ne2 = 1.5057799 + 0.6276034 λ2 / (λ2 - 0.0131558) - 0.01054063 λ2 + 0.002243821 λ4
Sellmeier Equations of KDP: (λ in µm)	no2 = 2.259276 + 0.01008956 / (λ2 - 0.012942625) + 13.00522 λ2 / (λ2 - 400) ne2 = 2.132668 + 0.008637494 / (λ2 - 0.012281043) + 3.2279924 λ2 / (λ2 - 400)

KDP/DKDP Crystal Specifications

Properties	Values
Orientation Accuracy	< 30 arcmin
Clear Aperture	> 90%
Parallelism	< 20 arcsec
Perpendicularity	< 5 arcmin
Surface Quality	20/10, S/D
Flatness	< λ/4 @ 632.8 nm
Extinction Ratio	30 dB

KDP/DKDP Crystal Applications

Frequency Conversion: Used for second, third, and fourth harmonic generation in Nd:YAG laser systems, enabling efficient frequency conversion.
Electro-optic Modulation: Ideal for manufacturing Q-switches, Pockels cells, and other electro-optic modulators for laser control.
UV Generation: Widely used in applications that require UV light generation due to their excellent UV transmission properties.
Laser Systems: Applied in high-power laser systems, including those used in scientific, industrial, and military applications.
Optical Pulse Compression: Used in optical systems for pulse compression, contributing to improved performance in high-energy laser systems.

KDP/DKDP Crystal Packing And Shipping

KDP/DKDP Crystal will be securely packaged in sturdy containers with cushioning materials to prevent movement or damage during shipping. This careful packaging ensures that the product arrives in perfect condition, maintaining its high-quality standards throughout the delivery process.

Potassium Dihydrogen Phosphate Crystal | KDP/DKDP Crystal Packing

Where to Buy KDP/DKDP Crystal in Bulk?

Heeger Materials Inc., a professional supplier and manufacturer of high-quality Nonlinear Crystals products including KDP/DKDP Crystal, leverages extensive expertise in supply and export to offer competitive prices. We provide customized solutions to meet specific requirements, ensuring exceptional quality and customer satisfaction.

Heeger Materials Inc. was established in 2016 in Colorado, USA. We specialize in premium-grade metals, alloys, ceramics, powders, and other materials catering to research, development, and large-scale industrial production in scientific and industrial sectors.

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