Contact Us

    YAG Crystal

    • Introduction

    Undoped YAG Crystal


    Undoped YAG Crystal is an excellent material for UV-IR optical windows, particularly for high temperature and high energy density applications. The mechanical and chemical stability is comparable to sapphire crystal, but YAG is unique with non-birefringence and available with higher optical homogeneity and surface quality. Up to 3 YAG boule grown by CZ method, as-cut blocks, windows and mirrors are available from CryLight.

    Specifications


    Specifications:

    Orientation: < 111 > +/-5deg

    Diameter Tolerance : +0.0 /-0.1mm

    Thickness Tolerance: +/-0.2mm

    Surface Quality: better than 10/5 scratch/dig

    Parallelism: < 30 arcsec

    Flatness: < λ/8 @632.8nm

    Perpendicularity: < 5 arcmin

    Wavefront Distortion: < λ/2 @632.8nm

    Coating: Coating upon Request


    Properties:

    Crystal Structure Cubic

    Density 4.5 g/cm3

    Transmission Range 250 - 5000 nm

    Melting Point 1970 °C

    Specific Heat 0.59 W·s /g /K

    Thermal Conductivity 14 W/m /K

    Thermal Shock Resistance 790 W /m

    Thermal Expansion 6.9x10-6 /K

    dn/dT, @ 633nm 7.3x10-6 /K-1

    Mohs Hardness ~ 8.5

    Refractive Index 1.8245 @ 0.8mm, 1.8197 @ 1.0mm,

    1.8121 @ 1.4mm

    Related Content
    • Protective Windows

      Protective Windows

      March 14, 2017Protective Window is applied to isolate different physical environments while allowing light to pass through. When selecting windows, please consider the material, transmission, scattering, wave front...view
    • Parabolic Mirrors

      Parabolic Mirrors

      March 14, 2017Parabolic reflectors are used to collect energy from a distant source (for example sound waves or incoming star light). Since the principles of reflection are reversible, parabolic reflectors can also...view
    • Sapphire Lenses

      Sapphire Lenses

      February 17, 2017Sapphire is the best medium for spherical lenses that require a broad spectrum of light transmission and high optical clarity, especially in demanding applications such as laser system or working unde...view