The Physical and Optical Properties of KDP Crystals
Properties
Values

 

DKP
KD*P
Chemical formula KH2PO4 KD2PO4
Transparency Range 200-1500nm 200-1600nm
Nonlinear Coefficients d36=0.44pm/V d36=0.40pm/V
Refractive index (at 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 >5 GW/cm2 >3 GW/cm2
Extinction ratio   30dB
Sellmeier equations of KDP:(λ in um):
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 DKDP:(λ in um):
no2=1.9575544+0.2901391λ2/(λ2-0.0281399)-.02824391λ2+0.004977826λ2
ne2=1.5005779+0.6276034λ2/(λ2-0.0131558)-.01054063λ2+0.002243821λ2