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Optical diamond

Optical grade diamond has good transmittance in ultraviolet, visible, infrared and microwave bands, the optical transmittance can reach more than 70%, and has excellent mechanical, thermal, electrical properties and chemical stability, strong ability to resist harsh environment, can adapt to complex and changeable harsh environmental conditions, is a kind of optical material with the best comprehensive performance.

Product Introduction

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    • Commodity name: Optical diamond

    Optical grade diamond has good transmittance in ultraviolet, visible, infrared and microwave bands, the optical transmittance can reach more than 70%, and has excellent mechanical, thermal, electrical properties and chemical stability, strong ability to resist harsh environment, can adapt to complex and changeable harsh environmental conditions, is a kind of optical material with the best comprehensive performance. <br>

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  • It is mainly used in the infrared window of airborne/missile-borne/shipborne infrared search and tracking system, high power Co 2 / solid state laser weapons, etc., the microwave window of high energy microwave feed window, high energy microwave weapons, thermonuclear fusion reactor, etc., and the window, prism and lens for spectroscopy, medical optics, etc.

    Laser crystal
    Solid-state lasers are widely used as an important source of laser output at specific wavelengths such as infrared, visible and ultraviolet. The wide optical transmission of CVD diamonds combined with high Raman gain can change the design and performance of lasers. CVD diamonds have properties such as higher thermal conductivity, low thermal expansion coefficient and damage resistance, which facilitates the development of lasers with stronger output power, compactness and variable wavelengths.

    Infrared window
    Infrared window is an important structural and functional component in the military. CVD diamond has good optical transmittance and high thermal conductivity in the infrared band, which can withstand high energy input and timely heat dissipation. High hardness and wear resistance, can withstand the erosion of sand in harsh environments; As well as low thermal expansion coefficient, low scattering coefficient, strong acid and alkali chemical stability, it becomes a special infrared optical material that can be used under extreme conditions.

    Microwave window
    Diamond is a key window element for cyclotron tubes and microwave waveguides in magnetically confined nuclear fusion reactors, and diamond microwave Windows can withstand > 2MW of continuous high power density energy for applications in the satellite, aerospace and defense industries.

  • The size of single crystal diamond is more than 10mm, and the infrared transmittance is 71%
    Polycrystalline diamonds are 1-4 inches in size and have infrared transmittance of 68-70%

    Growth method

    MPCVD

    dimension 1-4 inches; customizable
    thickness 0.3-2.0mm, customizable
    transmittance

    >70%@8-200μm;

    Refractive index

    2.38@10μm,2.39@1064nm

    Absorption coefficient

    <0.1cm-1@10μm,0.12@1064nm

    scattering

    0.1-0.7%@8-12μm

    Dielectric constant (140GH)

    5.6±0.15

    Dielectric loss (140GH)

    5*10-5

    density

    3.52(×103Kg·m-3)

    Vickers hardness

    80-100GPa

    Young's modulus

    1050GPa

    Thermal conductivity

    >1800W/mK@300K

    Coefficient of thermal expansion

    1×10-6/K@300K

    Specific Heat Capacity

    0.502J/gK@300K

    Thickness tolerance

    ±10 μm

    Thickness variation

    TTV< 20μm

    curvature

    Bow< 50μm@4inch;Bow< 30μm@2inch

    Warping degree

    Warp< 50μm@4inch;Warp< 20 μm@2inch

    roughness

    Ra < 10nm

     

     

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