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            • 磷酸鈦氧鉀(KTP)
             
            磷酸鈦氧鉀(KTP)

             

            磷酸鈦氧鉀(KTP)最常用于倍頻Nd:YAG及其他摻Nd晶體的激光,特別是在中低功率密度的激光器中。到目前為止,利用KTP進行腔內與腔外倍頻的摻Nd晶體的激光器,在逐步取代可見光染料激光和可調藍寶石激光器。廣泛使用實驗室和醫學系統, 射程探測器,激光雷達,光通信和工業激光系統。

            Advantages:
            • Large Nonlinear Optical (NLO) Coefficients
            • Wide Angular Bandwidth and Small Walk-off Angle
            • Broad Temperature and Spectral Bandwidth
            • High Electro-Optic (E-O) Coefficient and Low Dielectric Constant
            • Large Figure of Merit for an Optical Waveguide Modulator
            • Nonhygroscopic, Good Chemical and Mechanical Properties

            Capabilities:

            Aperture:
            2x2 ~ 10x10mm
            Lenght:
            0.1 - 20mm
            Cutting Angle q and f:
            Determined by different kinds of homonic generartion
            Phase matching type:
            Type I or Type II
            End Configuration:
            Plano/Plano or Brewst/Brewst or Specified


            Specifications:

            Angle tolerance:
            Δθ< ± 0.5°; Δφ< ±0.5°
            Dimensional Tolerance:
            (W ± 0.1mm) x (H ± 0.1mm) x (L + 0.2mm/-0.1mm)
            Flatness:
            <λ/8 at 633nm
            Surface Quality:
            10/5 Scracth/Dig
            Parallelism:
            < 20 arc seconds
            Perpendicularity:
            < 5 arc minutes
            Wavefront Distortion:
            <λ/8 at 632.8nm
            Clear Aperture:
            Central 95%
            Chamfer:
            0.15x45°
            Coating:
            a) * S1,S2: AR @ 1064 nm R<0.1% & 532nm R<0.25%
            b) * S1:HR @ 1064nm R>99.8% & HT@ 808nm T>95%
            S2:AR @ 1064 nm R<0.1% & 532nm R<0.25%

            Prorerties:

            Crystal structure
            Orthorhombic, point group mm2
            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/cm3
            Color
            colorless
            Hygroscopic susceptibility
            no
            Specific heat
            0.1643 caλ/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
            Refractive indices
            -
            nx
            ny
            nz
            1064nm
            1.7377
            1.7453
            1.8297
            532nm
            1.7780
            1.7886
            1.8887
            Absorption coefficients
            a < 1%/cm @1.064μ m and 0.532μ m
            Phase matchable range
            0.984 - 3.4 μ m
            Therm-optic coefficients
            dnx/dT=1.1x10-5/°C, dny/dT=1.3x10-5/oC, dnz/dT=1.6x10-5/°C
            Nonlinear optical coefficients
            d31=2.54pm/V, d31=4.35pm/V, d31=16.9pm/V
            d24=3.64pm/V, d15=1.91pm/V at 1.064 mm
            deff(II)≈(d24 - d15)sin2Φsin2Θ - (d15sin2Φ?+ d24cos2Φ)sinΘ
            Electro-optic coefficients
            -
            Low frequency(pm/V)
            High requency(pm/V)
            γ13
            γ23
            γ33
            γ51
            γ42
            9.5
            15.7
            36.3
            7.3
            9.3
            8.8
            13.8
            35.0
            6.9
            8.8
            Dielectric constant
            eeff=13

            Sellmeier equations
            nx2=3.0065+0.03901/(l2-0.04251)-0.01327l2
            ny2=3.0333+0.04154/(l2-0.04547)-0.01408l2
            nz2=3.3134+0.05694/(l2-0.05658)-0.01682l2

             

            Note: Kinds of sizes, coating are available upon request.


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