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High precision various Sapphire Optics

Short Description:


Production capability: 1000-3000pcs per month

Payment : Paypal, Western Union, T/T

Shipping method: Express, Airfreight, Ocean freight


We can provide

·Competitive Prices

·Quality ISO:9001-2015 Certified

·ROHS Compliant

·Short lead time

·Standard size stock available

·Fast Prototyping

·Custom Optics Fabrication

·Quality assurance

·Warranty & After sales service


  • Transimisson graph: Sapphire
  • Product Detail

    Product Tags

    Product Parameter

    Sapphire (Al2O3) has outstanding surface hardness and can only be scratched by a few materials other than its own. Strong hardness makes it possible to make optical elements thinner than other substrates. Sapphire is chemically inert and does not dissolve in water, ordinary acids and bases at up to 1000 C. Sapphire is transparent from UV to IR (150 nm - 4.5 m). It is often used in infrared laser systems. The ordinary refractive index at 1.064 m is 1.754 and the unusual refractive index is 1.747. The high-quality artificial sapphire crystal materials have good transmittance in the 0.20-5.50 micron band. The infrared transmittance hardly varies with the temperature, and the transmittance to ultraviolet and visible light is also very high. It is widely used in infrared and far infrared military equipment. Because the hardness of sapphire is second only to that of diamond, and its structural strength is very high, the thickness of sapphire window made by enhancing the transmittance can be compared with that of general media. The quality of windows is thinner, which is very suitable for demanding applications.

    Transmission wavelength

    1000nm---14000nm

    Density    (g cm-3)

    5.32 @300K

    Melting point     (℃)

    1238

    Dielectric constant static / hyperframes

    12.85/10.88 @ 300K

    Thermal Expansion Coefficient (1/℃)

    5.7*10-6 @300K

    Bulk modulus (Gpa)

    101.32

    Shear modulus  (Gpa)

    55.66 @298K

    Thermal Conductivity   (J/k .m. s)

    55 @ 300K

    Specific Heat      (J/g .k)

    0.32

    Knoop Hardness  (kg/mm2)

    731

    Apparent elastic limit   (Mpa)

    49.46

    Young’s Modulus     (Gpa)

    138.5 @298K

    Poisson’s Ratio

    0.31 @293K

    Debye temperature(k)

    360

    band gap (ev)

    1.4

    absorption coefficient

    0.01 @ 2500nm—11000nm

    Thermo-optical coeffecient,dn/dT (1/k)

    160-120*10-6 @3000nm—12000nm


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