KTP (KTiOPO4) is a nonlinear optical crystal, which possesses excellent nonlinear and electro-optic properties.It has large nonlinear optical coefficients and wide angular bandwidth and small walk-off angle,etc.which make it suitable for various nonlinear frequency conversion and wave guide online_ordering.
Due to very high effective nonlinearity (d eff ~8.3xd 36 (KDP)at 1.06μ m) and excellent optical properties,KTP perfectly suits as lasing material in various online_orderings .The phase matching range of KTP crystal lies in 0.99-3.3 μ m region .This allows us to use KTP as an intracavity and extracavity frequency double for the most commonly used lasers,such as Nd:YAG,Nd:Glass and Nd:YLF
Capabilities :
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1)
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Aperture:1x1 ~ 10x10mm |
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Length: 0.05 ~ 20mm |
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Phase Matching Angle: Determined by different homonic generartion typical θ=90°; φ=23.5° for SHG 1064nm |
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Phase matching type:Type II |
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Typical Coating: a) AR @1064nm R<0.1%; AR @ 532nm, R<0.25%. b) HR @1064nm, R>99.8%; HT @808nm, T<0.5% Different coating specification upon customer request. |
| Typical Specification and Tolerance: | |
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1)
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Angle tolerance: Δθ< ± 0.2°; Δφ< ±0.2° |
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Dimension tolerance: (W ± 0.1mm) x (H ± 0.1mm) x (L + 0.2mm/-0.1mm) |
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Flatness: λ/8 @ 633nm |
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Scratch/Dig code: better than 10/5 Scracth/dig per MIL-O-13830A |
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Parallelism: < 20 arc seconds |
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Perpendicularity:< 5 arc minutes |
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Wavefront distortion: < λ/8 @ 633nm |
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Clear aperture: > 90% central area |
Physical and Optical Properties
| Crystal structure | Orthorhombic, point group mm 2 |
| Melting point | 1172°C incongruent |
| Cell parameters | a=6.404?, b=10.616?, c=12.814?, Z=8 |
| Curie point | 936°C |
| Mohs hardness | ~5 |
| Density | 3.01 g/cm 3 |
| Color | colorless |
| Hygroscopic susceptibility | no |
| Specific heat | 0.1643 cal/g.°C |
| Thermal conductivity | 0.13 W/cm/°K |
| Electrical conductivity | 3.5x10 -8 s/cm (c-axis, 22°C, 1KHz) |
| Transmitting Range | 350nm~4500nm | |||
| nx | ny | nz | ||
| Refractive Indices | 1064nm | 1.7377 | 1.7453 | 1.8297 |
| 532nm | 1.7780 | 1.7886 | 1.8887 | |
| Absorption Coefficients | α < 1% / cm @ 1.064 μm | |||
| Phase Matchable Range | 0.984-3.4μm | |||
| Therm-Optic | dnx / dT= 1.1x10 /°C,dny / dT= 1.3x10 /°C,dnz / dT=1.6x10 /°C | |||
| Coefficients | ||||
| Nonlinear | d31=2.54pm/V, d32=1.35pm/V, d33=16.9pm/V | |||
| Optical Coefficients | d24=3.64pm/V, d15=1.91pm/V, at 1.064μm | |||
| deff(II) (d24-d15)sin2Φsin2θ-(d10sin Φ+d24cos Φ)sinθ | ||||
| Low frequency | High frequency | |||
| (pm/V) | (pm/V) | |||
| Electro-Optic | r13 | 9.5 | 8.8 | |
| Coefficients | r23 | 15.7 | 13.8 | |
| r33 | 36.3 | 35.0 | ||
| r51 | 7.3 | 6.9 | ||
| r42 | 9.3 | 8.8 | ||
| Dielectric Constant | εeff=13 | |||
| nx = 3.0065 + 0.03901/(λ - 0.04251) - 0.01327λ | ||||
| Sellmeier Equations | ny = 3.0333 + 0.04154/(λ - 0.04547) - 0.01408λ | |||
| nz = 3.3134 + 0.05694/(λ - 0.05658) - 0.01682λ | ||||
Notes:
1.To inquiry or order a finished KTP crystals, please specify the specification listed above, we kindly request engineering drawing to specify orientation, Please consult us for the designs if you're sure about the phase matching angle for others' special online_ordering.
2.For information of handling and Mark of Mark of KTP.
