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kdp crystals dkdp crystal
kdp crystals dkdp crystal

OST Photonics KDP Crystals/DKDP Laser Nonlinear Crystals

Potassium Dihydrogen Phosphate (KDP) and Potassium Dideuterium Phosphate (DKDP, KD*P) are among the most widely-used commercial NLO materials. KDP crystals and  DKDP crystals are commonly used for doubling, tripling and quadrupling of Nd:YAG laser at the room temperature. In addition, KDP crystals and  DKDP crystals are also excellent electro-optic crystals with high electro-optic coefficients, widely used as electro-optical modulators, Q-switches, and Pockels Cells, etc. If you would like to know more about KDP crystals and  DKDP crystals prices, please do not hesitate to contact Ost Photonics.

Main Applications of KDP Crystals DKDP Laser Nonlinear Crystals


  • Laser frequency conversion — harmonic generation for high pulse energy

  • Electro-optical modulation

  • Q-switching crystal for Pockels cells


Advantages of KDP Crystals DKDP Laser Nonlinear Crystals


  • Good UV transmission

  • High birefringence

  • High optical damage threshold

  • High nonlinear coefficients

  • Non-hygroscopic, chemically and mechanically stable

  • Wide working temperature range

  • Low capacitance


Specifications of KDP Crystals DKDP Laser Nonlinear Crystals


Tolerance of cutting angle

△θ≤±0.25°,△φ≤±0.25°

Tolerance of dimension

Dimension+0/-0.1 mm,L:±0.1mm

Flatness

λ/10 @ 632.8nm

Wavefront distortion

λ/8@ 632.8nm

Surface quality

10/5 per MIL-O-13830A

Parallelism

20″

Perpendicularity

10′

Clear Aperture:

> 90%

Chamfer:

< 0.1 mm @ 45°

Size

Upon customer request

Coating

AR/HR coating upon customer’s request

Damage Threshold

750MW/CM2 at 1064nm, TEM00, 10ns, 10Hz

Quality Warranty Period

One year under proper use


DKDP Laser Nonlinear Crystals KDP Crystal Properties




KDP

DKDP / KD*P

Chemical Formula

KH2PO4

KD2PO4

Transparency Range

200-1500nm

200-1600nm

Nonlinear Coefficients

d36=0.44pm/V

d36=0.40pm/V

Refractive index (@1064nm)

no=1.4938,ne=1.4599

no=1.4948,ne=1.4554

Electro-optical Coefficients

r41=8.8pm/V

r63=10.3pm/V

r41=8.8pm/V

r63=25pm/V

Longitudinal half-wave voltage

Vπ=7.65KV(λ=546nm)

Vπ=2.98KV(λ=546nm)

Absorptance

0.07/cm

0.006/cm

Optical damage threshold

>5GW/cm2

>3GW/cm2

Extinction ratio


30dB

Sellmeier equations of KDP (λ in μm)

no²=2.259276+0.01008956/(λ²-0.012942625)+13.00522λ²/(λ²-400)
ne²=2.132668+0.008637494/(λ²-0.012281043)+3.2279924λ²/(λ²-400)

Sellmeier equations of KD*P (λ in μm)

no²=1.9575544+0.2901391λ²/(λ²-0.0281399)-0.02824391λ²+0.004977826λ4
ne²=1.5005779+0.6276034λ²/(λ²-0.0131558)-0.01054063λ²+0.002243821λ4




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Head Office: No. 66, 8 Group, Chengbei Village, Yanguan Town, Jiaxing 314411, China;

Hangzhou Branch: Room 1012, Chunhua Bussiness Center, No. 159, Hangbo Street, Shangcheng District, Hangzhou 310009, Zhejiang, China
sales@ostphotonics.com; info@ostphotonics.com +86-0571-86780460