Impex GmbH

Optical Property

Transmission Range, µm	0.35 - 4.5
Refractive Index, at 532 nm at 1.064 µm	n_x=1.779 n_y=1.789 n_z=1.889 n_x=1.738 n_y=1.746 n_z=1.830
Average Refractive Index	1.8
NLO Coefficients, pm/V 1064 nm to 532 nm	d₃₁=6.5 d3₂=5.0 d₃₃=13.7 d₃₄=6.1
Absorption loss, %/cm at 1064 nm or 532 nm	< 0.001
For Type II SHG of a Nd:YAG laser at 1064 nm
Temperature Acceptance:	24°C-cm
Spectral Acceptance:	0.56 nm-cm
Angular Acceptance:	14.2 mrad-cm (φ); 55.3 mrad-cm (θ)
Walk-off Angle:	0.55°

Physical Property

Chemical formula	KTiOPO₄
Density, g/cm³	3.01
Lattice Constants, Å	a=12.814 b=6.404 c= 10.616
Crystal Structure	Orthorhombic
Melting Point, at °C	1172
Curie Point, °C	936
Hygroscopic Susceptibility	No
Thermal Conductivity, W/(m · K)	13
Thermal Expansion, 1/°C	8.7 x 10^-6 10.5 x 10^-6 -0.2 x 10^-6
Electrical Conductivity, s/cm (c-axis, 22oC, 1KHz)	3.5x10^-8
Mohs Hardness	~5
Relative Dielectric Constant	e_eff=13
Specific heat, cal/g.°C	0.1643
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