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            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 :

            Aperture:1x1 ~ 10x10mm
            Length: 0.05 ~ 20mm
            Phase Matching Angle:
            Determined by different homonic generartion
            typical θ=90°; φ=23.5° for SHG 1064nm
            Phase matching type:Type II
            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:
            Angle tolerance: Δθ< ± 0.2°; Δφ< ±0.2°
            Dimension tolerance: (W ± 0.1mm) x (H ± 0.1mm) x (L + 0.2mm/-0.1mm)
            Flatness: λ/8 @ 633nm
            Scratch/Dig code: better than 10/5 Scracth/dig per MIL-O-13830A
            Parallelism: < 20 arc seconds
            Perpendicularity:< 5 arc minutes
            Wavefront distortion: < λ/8 @ 633nm
            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
            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


            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.



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