DKDP

DKDP

CRYSTECH

KD*P

DKDP, KDP

Introduction

Potassium Dihydrogen Phosphate (KDP) and Potassium Dideuterium Phosphate (KD*P ) are among the most widely-used commercial NLO materials. They are commonly used for doubling, tripling and quadrupling of Nd:YAG laser at the room temperature. 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.

Good UV transmission High optical damage threshold

High birefringence High nonlinear coefficients

Physical and Optical Properties:

Chemical Formula Crystal Structure Transmission Range Nonlinear Coefficients Refractive Indcies (at 1064nm)

Electro-Optical Coefficients Longitudinal Half-Wave Voltage:

KH2PO42PO4 Tetragonal Tetragonal 200-1500nm

200-1600nm

d3636=0.40pm/V no=1.4938, no=1.4948, n=1.4599 n=1.4554

r41=8.8pm/V r41=8.8pm/V

r63=10.3pm/V r63=25pm/V

Vp=7.65KV(l=546nm)Vp=2.98KV(l=546nm)

7.4 oC*cm Temperature Synchronism Width, 11.5C*cm Spectral Synchronism Width, Angle Synchronism Width, Absorption Coefficient, cm-1 Mohs Hardness

Optical Damage Threshold: Extinction Ratio:

Sellmeier Equations: KDP: DK*P

106 Å*cm 0.84 mrad*cm

32 Å*cm

0.94 mrad*cm

>5 GW/cm2GW/cm2

30dB

no= 2.259276 + 0.01008956/(λ - 0.012942625) + 13.005522λ/(λ - 400)

ne2 = 2.132668 + 0.008637494/(λ2 - 0.012281043) + 3.2279924λ2/(λ2 - 400) no= 1.9575544 + 0.2901391/(λ - 0.0281399) - 0.02824391λ+0.004977826λne2 = 1.5005779 + 0.6276034/(λ2 - 0.0131558) - 0.01054063λ2 +0.002243821λ4

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