Crystal Products
Laser Products

KTP

KTP possesses excellent nonlinear and electro-optic properties. It has large nonlinear optical coefficients, broad temperature and spectral bandwidth, wide angular bandwidth and small walk-off angel. It can be used as an intracavity and extracavity frequency double for the most commonly used lasers, such as Nd:YAG, Nd:glass and Nd:YLF.

Basic Properties:
    Crystal Structure:
    Orthorhombic, point group mm2
    Melting Point:
    About 1172 oC
    Curie point:
    936oC
    Mohs Hardness:
    5.0
    Density:
    3.01g/cm3
    Transmitting range:
    350nm~4500nm
    Phase matchable range:
    0.984 - 3.4 μ m
    Refractive Indices:
    Wavelength        nx          ny          nz
      1064 nm       1.7377   1.7453    1.8297
      532 nm         1.7780   1.7886    1.8887
    Therm-Optic Coefficients:
    dnx/dT=1.1x10-5/oC
    dny/dT=1.3x10-5/oC
    dnz/dT=1.6x10-5/oC
    Sellmeier Equations:
    n2x=3.0065+0.03901/(l2-0.04251)-0.01327l2
    n2y=3.0333+0.04154/(l2-0.04547)-0.01408l2
    n2z=3.3134+0.05694/(
    l2-0.05658)-0.01682l2
    Nonlinear optical coefficients:
    d31=2.54pm/V, d32=4.35pm/V, d33=16.9pm/V
    d24=3.64pm/V, d15=1.91pm/V at 1064 nm
    deff(II)» (d24 - d15)sin2fsin2q - (d15sin2f + d24cos2f)sinq
    Electro-Optic Coefficients:
                Low Frequency (pm/V)      High Frequency(pm/V)
      g13                     9.5                                         8.8
      g23                   15.7                                        13.8
      g33                   36.3                                        35.0
      g51                    7.3                                         6.99
      g42                    9.3                                          8.8
    Linear Absorption Coefficients:
    a <0.001 cm-1 @ λ =1064 nm or 532 nm
    Hygroscopic:
    No
    Relative Dielectric Constant:
    ε eff =13
    Specific heat:
    0.1643 cal/g. oC
    Electrical conductivity:
    3.5x10-8 s/cm (c-axis, 22oC, 1KHz)
    Thermal Conductivity:
    13W/m/K
Main Specifications:
    Nd: Dopant Level:
    0.15 - 5.0 atm%
    Wavefront Distortion:
    <λ/4 at 633 nm
    Orientation:
    ±0.5 deg
    Surface quality:
    10/5 Scratch/Dig per MIL-O-13830B
    Flatness:
    λ/8 at 633 nm
    Parallelism:
    <10 arc sec
    Flatness:
    Intrinsic Loss
    Flatness:
    <0.1% cm-1
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Sales Office in Shanghai
Tel: 86-21-58325141      Fax: 86-21-58329412
E-mail: sales@polarbeam.com

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