Almaz Optics, Inc.
12 Chadsford Ct.  Marlton, NJ 08053, USA
Tel:  856 797-0491, Fax: 856 797-0228
e-mail: mail@almazoptics.com

 

































Potassium Titanyl Phosphate (KTP)

KTP is a nonlinear optical (NLO) material known for its high NLO coefficient, wide transparency range and temperature synchronism, it has a moderate optical damage threshold. The single crystal KTP is commonly used for effective nonlinear transformation of laser radiation, the most popular application is for Second Harmonic Generation (SHG).
Maximum available size: 20 x 20 x 20 mm. Finished KTP optical components can be supplied with double narrow band antireflection coating.


Main Properties

Chemical Formula

KTiOPO4

Crystal Structure

Orthorhombic

Lattice Constant,

a=12.814
b=6.404
c= 10.616

Density, g/cm3 at 293 K

3.03

Melting Temperature, K 1450
Thermal Expansion, 1/K at 373 K
a1
a2
a3

8.7 x 10-6
10.5 x 10-6
-0.2 x 10-6
Hardness (Mohs) ~5
Transmittance Range, mm 0.35-4.5
Average Refractive Index 1.8

Spectral Refractive Index

l
=0.532 mm


l=1.064 mm

nx=1.779
ny=1.789
nz=1.889
nx=1.738
ny=1.746
nz=1.830
Nonlinear Coefficients, pm/V
1064 nm to 532 nm

d31=6.5
d32=5.0
d33=13.7
d34=6.1

SHG of Type II (1064 nm), pm/V
Conversion Efficiency, %
Phase-matching angle to X in XY plane
deff=7.4
45-67
22
Synchronism Width:
temperature, oC x cm
spectral, x cm
angle, mrad x cm


25
5.5
16.0

Optical Damage Threshold, MW/cm2

10-40