Products

PRODUCT LIST

KD*P/KDP

NLO Crystals--------- KD*P/KDP Crystals

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

oefficients 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.

Notes: Because their polished surface easier moistens, however, the user is advised to provide

a dry condition (<50%) and the sealed housing for preservation.

　
KDP

KD*P

Chemical Formula KH 2 PO 4 KD 2 PO 4

Transparency Range 200-1500nm 200-1600nm

Nonlinear Coefficients d 36 =0.44pm/V d 36 =0.40pm/V

Refractive Index (at 1064nm) n o =1.4938, n e =1.4599 N o =1.4948, n e =1.4554

Electro-Optical Coefficients r 41 =8.8pm/V r 41 =8.8pm/V

r 63 =10.3pm/V r 63 =25pm/V

Longitudinal Half-Wave Voltage: V p =7.65KV( l =546nm) V p =2.98KV( l =546nm)

Absorptance: 0.07/cm 0.006/cm

Optical Damage Threshold: >5 GW/cm 2 >3 GW/cm 2

Extinction Ratio: 30dB 30dB

Sellmeier Equations of KDP:

n o 2 = 2.259276 + 0.01008956/( l 2 - 0.012942625) + 13.005522 l 2 /( l 2 - 400)

n e 2 = 2.132668 + 0.008637494/( l 2 - 0.012281043) + 3.2279924 l 2 /( l 2 - 400)

Sellmeier Equations of DKDP

n o 2 = 1.9575544 + 0.2901391/( l 2 - 0.0281399) - 0.02824391 l 2 +0.004977826 l 4

n e 2 = 1.5005779 + 0.6276034/( l 2 - 0.0131558) - 0.01054063 l 2 +0.002243821 l 4
ORDER