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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.


       PDF to download

     
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