KTP

 KTP (Potassium Titanyl Phosphate, KTiOPO4) is a nonlinear optical material generally used for doubling of solid-state lasers, such as Nd:YAG. The crystal has a relatively high optical damage threshold, a large optical nonlinearity of second-harmonic generation (SHG) and excellent thermal stability. Its SHG coefficient is approximately three times higher than KDP, and it is often used as an optical parametric oscillator (OPO) for near IR generation up to 3 µm.

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
Non-hydroscopic, chemically and mechanically stable
High thermal conductivity
Moisture free
Minimum mismatch gradient
Low cost compare with BBO and LBO

Specification of KTP 

Dimension Tolerance
(W±0.1mm) x (H±0.1mm) x (L+0.2/-0.1 mm) (L≥2mm)
(W±0.1mm) x (H±0.1mm) x (L±0.1 mm) (L<2mm)
Absorption
<0.01%@1064nm, <1%@532nm
Cutting Angle Tolerance
Dq< ±0.2°, Df< ±0.2°
Wavefront Distortion
<λ/8 @632.8 nm
Chamfer
≤ 0.15 mm x 45°
Perpendicularity
< 5 arc minutes
Parallelism
< 20 arc seconds
Flatness
<λ/10 @633 nm
Scratch/Dig 
10/5 per MIL-PRF-13830B
Clear Aperture
> Central 90%
Antireflection Coating
R < 0.2% @1064nm, R < 0.5% @532nm

Application: SHG@1064nm,

Part No
W
H
L
θ
φ
Coating
KTP-3305S1
3
3
5
90
23.5
AR/AR1064&532nm
KTP-3310S1
3
3
10
90
23.5
AR/AR1064&532nm
KTP-4405S1
4
4
5
90
23.5
AR/AR1064&532nm
KTP-4410S1
4
4
10
90
23.5
AR/AR1064&532nm
KTP-5505S1
5
5
5
90
23.5
AR/AR1064&532nm
KTP-5510S1
5
5
10
90
23.5
AR/AR1064&532nm
KTP-6605S1
6
6
5
90
23.5
AR/AR1064&532nm
KTP-6608S1
6
6
8
90
23.5
AR/AR1064&532nm
KTP-7705S1
7
7
5
90
23.5
AR/AR1064&532nm
KTP-7707S1
7
7
7
90
23.5
AR/AR1064&532nm
KTP-8804S1
8
8
4
90
23.5
AR/AR1064&532nm
KTP-8808S1
8
8
8
90
23.5
AR/AR1064&532nm
KTP-9905S1
9
9
5
90
23.5
AR/AR1064&532nm
KTP-9907S1
9
9
6
90
23.5
AR/AR1064&532nm
KTP-101005S1
10
10
5
90
23.5
AR/AR1064&532nm
KTP-101006S1
10
10
6
90
23.5
AR/AR1064&532nm
KTP-131305S1
13
13
5
90
23.5
AR/AR1064&532nm
KTP-131306S1
13
13
6
90
23.5
AR/AR1064&532nm

Application: OPO 1064nm

Part No
W
H
L
θ
φ
Coating
KTP-3310O1
3
3
10
90
0
AR/AR1064&1570nm
KTP-3320O1
3
3
20
90
0
AR/AR1064&1570nm
KTP-4415O1
4
4
15
90
0
AR/AR1064&1570nm
KTP-4420O1
4
4
20
90
0
AR/AR1064&1570nm
KTP-5515O1
5
5
15
90
0
AR/AR1064&1570nm
KTP-5520O1
5
5
20
90
0
AR/AR1064&1570nm
KTP-6620O1
6
6
20
90
0
AR/AR1064&1570nm
KTP-7720O1
7
7
20
90
0
AR/AR1064&1570nm
KTP-8820O1
8
8
20
90
0
AR/AR1064&1570nm
KTP-101020O1
10
10
20
90
0
AR/AR1064&1570nm