KTP Crystal

KTP Crystal

KTP Crystal

Potassium Titanyl Phosphate (KTiOPO4 or KTP) is widely used in both commercial and military lasers including laboratory and medical systems, range-finders, lidar, optical communication and industrial ..

Products Details

KTP Crystal

Potassium Titanyl Phosphate (KTiOPO4 or KTP) is widely used in both commercial and military lasers including laboratory and medical systems, range-finders, lidar, optical communication and industrial systems.
 
 

FEATURES:

Large nonlinear optical coefficient;
Wide angular bandwidth and small walk-off angle;
Broad temperature and spectral bandwidth;
High electro-optic coefficient and low dielectric constant;
Large figure of merit;
Nonhydroscopic, chemically and mechanically stable.
 
 

KTP Chemical and Structural Properties:

Crystal Structure
Orthorhombic, space group Pna21,point group mm2
Lattice Parameter
a=6.404A, b=10.616A, c=12.814A, Z=8
Melting Point
About 1172°C
Mohs Hardness
5
Density
3.01 g/cm3
Thermal Conductivity Coefficient
13W/m/K
Thermal Expansion Coefficient
ax=11x10-6/0C, ay=9x10-6/0C, az=0.6x10-6/0C 
 
BBO Optical and Nonlinear Optical Properties
Transparency Range
350~4500nm
SHG Phase Matchable Range
497 ~ 1800nm  (Type II)
Thermal-optic Coefficients (/°C)
dnx/dT=1.1X10-5
dny/dT=1.3X10-5
dnz/dT=1.6X10-5
Absorption Coefficients
<0.1%/cm at 1064nm    <1%/cm at 532nm
For Type II SHG of a Nd:YAG laser at 1064nm
Temperature Acceptance: 24°C-cm 
Spectral Acceptance: 0.56nm-cm
Angular Acceptance: 14.2mrad-cm (φ);55.3mrad-cm    (q)
Walk-off Angle: 0.55°
NLO Coefficients
deff(II)≈(d24 - d15)sin2fsin2q - (d15sin2f + d24cos2f)sinq 
Non-vanished NLO Susceptibilities
d31=6.5 pm/V           d24=7.6 pm/V
d32= 5 pm/V            d15=6.1 pm/V
d33=13.7 pm/V
Sellmeier Equations 
nx2=3.0065+0.03901/(l 2-0.04251)-0.01327l 2
ny2=3.0333+0.04154/(l 2-0.04547)-0.01408l 2 
nz2=3.3134+0.05694/(l 2-0.05658)-0.01682l 2
 

Capability:

1. Optical

Specification
Standard
High Precision
Dimensions
Size: Up to 20x20mm2
Thickness: 0.01mm to 25mm
Dimension Tolerance
+/-0.1mm
+/-0.01mm
Wavefront Distortion
λ/8
λ/8
Flatness
λ/10
λ/10
Surface Quality
10/5
10/5
Orientation
+/-0.3°
+/-0.1°
Parallelism
20’’
10’’

2. Coating

Specificationg
Type
AR Coaing or P Coating 
Damage Threshold
>500MW/cm2