Potassium Titanyl Phosphate (KTiOPO4 or KTP) is widely used in both commercial and military lasers including laboratory and medical systems, range-finders, lidars, optical communication and industrial systems.
HG’s KTP crystals are featured by:
Large nonlinear optical coefficient
Wide angular bandwidth and small walk-off angle
Broad temperature and spectral bandwidth
High electro-optics coefficient and low dielectric constant
Non-hygroscopic, chemically and mechanically stable
Basic properties:
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Crystal Structure
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Orthorhombic, space group Pna21,point group mm2
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Lattice Parameter
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a=6.404?, b=10.616?, c=12.814?, Z=8
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Melting Point
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About 1172°C
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Mohs Hardness
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5
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Density
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3.01 g/cm3
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Thermal Conductivity
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13W/m/K
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Thermal Expansion Coefficient
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αx=11x10-6/°C, αy=9x10-6/°C, αz=0.6x10-6/°C
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HG Optronics INC. Warranty on specifications:
Dimension tolerance: (W±0.1mm)x(H±0.1mm)x(L+0.5/-0.1mm) (L≥2.5mm)
(W±0.1mm)x(H±0.1mm)x(L+0.1/-0.1mm) (L<2.5mm)
· Clear aperture: central 90% of the diameter
· No visible scattering paths or centers when inspected by a 50mW green laser
· Flatness: less than λ/8 @ 633nm
· Transmitting wavefront distortion: less than λ/8 @ 633nm
· Chamfer: ≤0.2mm@45°
· Chip: ≤0.1mm
· Scratch/Dig code: better than 10/ 5 to MIL-PRF-13830B
· Parallelism: better than 20 arc seconds
· Perpendicularity: ≤5 arc minutes
· Angle tolerance: Δθ≤0.25°, Δφ≤0.25°
· Damage threshold[GW/cm ]: >0.5 for 1064nm, TEM00, 10ns, 10HZ (AR-coated)
>0.3 for 532nm, TEM00, 10ns, 10HZ (AR-coated)
(W±0.1mm)x(H±0.1mm)x(L+0.1/-0.1mm) (L<2.5mm)
· Clear aperture: central 90% of the diameter
· No visible scattering paths or centers when inspected by a 50mW green laser
· Flatness: less than λ/8 @ 633nm
· Transmitting wavefront distortion: less than λ/8 @ 633nm
· Chamfer: ≤0.2mm@45°
· Chip: ≤0.1mm
· Scratch/Dig code: better than 10/ 5 to MIL-PRF-13830B
· Parallelism: better than 20 arc seconds
· Perpendicularity: ≤5 arc minutes
· Angle tolerance: Δθ≤0.25°, Δφ≤0.25°
· Damage threshold[GW/cm ]: >0.5 for 1064nm, TEM00, 10ns, 10HZ (AR-coated)
>0.3 for 532nm, TEM00, 10ns, 10HZ (AR-coated)
HG provides the following AR coating specifications:
AR-(1064/532) nm. R <0.2% @1064nm and R <0.5%@ 532nm
Damage threshold> 300MW/cm2 @ 1064,532 nm 0MW/cm2 @ 1064,532 nm
Broadband AR coating
HR1064nm & HT532nm, R> 99.8% @ 1064nm, T> 90% @ 532nm.