Titanyl Arsenate (KTiOAsO4 or KTA) is an excellent optical non-linear
crystal developed recently for non-linear optical and electrooptical
These non-linear optical and electrooptical coefficients
are higher in comparison with KTP and they have the added benefit
of significantly reduced absorption in the 2.0 - 5.0 µm region.
The large non-linear coefficients are combined with broad angular
and temperature bandwidths. Additional advantages of the Arsenates
are low dielectric constants, low loss tangent and ionic conductivities
orders of magnitude less than KTP. Single crystals of these Arsenates
are chemically and thermally stable, non-hygroscopic and are highly
resistant to high intensity laser radiation.
Crystals of KTA are important for second harmonic generation
(SHG), sum and difference frequency generation (SFG)/(DFG), optical
parametric oscillation (OPO), electrooptical Q-switching and modulation
and as substrates for optical waveguides. OPO devices based on these
crystals are reliable, solid state sources of tunable laser radiation
exhibiting energy conversion efficiencies above 50%. KTA has a very
high damage threshold. No optical damage was observed at the levels
of 10 - 20 GW/cm2 with the picosecond dye laser. This crystal is grown
using high temperature flux technique.
Optical parametric oscilator in middle IR region
1 - 5.5mkm
Different frequency generator in middle IR region
1 - 5.5mkm.
= 13.103, b = 6.558, c = 10.746 Å
= 1.782; ny = 1.790; nz = 1.863
= 1.7826, ny = 1.7890, nz = 1.8677
= 15 ± 1, r23 = 21 ± 1, r33 = 40 ± 1
= 2.76, d32 = 4.74, d33 = 18.5
damage threshold, MW/cm2
000 (1064 nm, 70 ps)
We supply KTP
optical elements made according to customers' order.