KDP and KD*P
Potassium
Dihydrogen Phosphate (KDP) and Potassium Dideuterium Phosphate (KD*P )
are among the most widely-used commercial NLO materials, characterized
by good UV transmission, high damage threshold, and high birefringence,
though their NLO coefficients are relatively low. They are usually used
for doubling, tripling and quadrupling of a 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,
such as Q-switches, Pockels Cells, etc.
Note: Sealed housing is requested to prevent KDP from moisture.
Physical and Optical Properties
| KDP | KD*P | |
| Chemical Formula Transparency Range Nonlinear Coefficients Refractive Index (at 1064nm) Electro-Optical Coefficients Longitudinal Half-Wave Voltage: Absorptance: Optical Damage Threshold: Extinction Ratio: |
KH 2 PO 4 200-1500nm d 36 =0.44pm/V No=1.4938, Ne=1.4599 r41=8.8pm/V, r63=10.3pm/V V p =7.65KV( l =546nm) 0.07/cm >5 GW/cm 2 30dB |
KD 2 PO 4 200-1600nm d 36 =0.40pm/V No=1.4948, Ne=1.4554 r41=8.8pm/V, r63=25pm/V V p =2.98KV( l =546nm) 0.006/cm >3 GW/cm 2 30dB |
|
Sellmeier Equations of KDP: Sellmeier Equations of DKDP |
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