Potassium titanyl phosphate (KTiOPO4 KTP) crystal

opticallaser

Crystal Structure Orthorhombic, point group mm2 Cell Parameters a = 6.404Å, b = 10.616Å, c = 12.814Å, Z = 8 Melting Point 1172 oC Curie point 936 oC Mohs Hardness 5.0 Density 3.01g/cm3 Linear Absorption Coefficients a<0.001 cm-1 @1064 nm or 532 nm Hygroscopic Susceptibility no Relative Dielectric Constant eeff=13 Specific heat 0.1643 cal/g.oC Electrical conductivity 3.5×10-8 s/cm (c-axis, 22oC, 1KHz) Thermal Conductivity 13W/m/K Transmitting range 350nm~4500nm Absorption coefficients a < 1%/cm @1.064µm and 0.532µm Phase matchable range 0.984-3.4 µm Therm-optic coefficients dnx/dT=1.1×10-5/℃ dny/dT=1.3×10-5/℃ dnz/dT=1.6×10-5/℃ Nonlinear optical coefficients d31=2.54pm/V, d31=4.35pm/V, d31=16.9pm/V d24=3.64pm/V, d15=1.91pm/V at 1.064 µm deff(II)≈ (d24 – d15)sin2φsin2θ – (d15sin2φ + d24cos2φ)sinθ