Optical Sapphire Windows11

BBAR (1650-3000nm) AR Coated Sapphire Window

Sapphire windows are highly prized in various high-performance applications due to their remarkable mechanical, chemical, and optical properties. Made from synthetic sapphire (Al2O3), these windows are second only to diamond in terms of hardness, making them extremely durable and scratch-resistant. Their broad transmission range from the ultraviolet (UV) to the infrared (IR) spectrum further enhances their versatility in demanding environments.

$25.80 – $358.10

$25.80
$25.80
$30.30
$31.20
$31.80
$36.70
$42.30
$53.40
$53.40
$71.40
$123.10
$175.70
$25.80
$25.80
$30.30
$31.20
$31.80
$36.70
$42.30
$53.40
$53.40
$71.40
$123.10
$175.70
$358.10
$358.10
$38.50
$38.50
$42.30
$50.80
$61.10
$201.10
$45.10
$45.10
$48.90
$57.30
$66.70
$206.80
$25.80
$25.80
$25.80
$30.30
$31.80
$31.80
$31.80
$36.70
$36.70
$42.30
$42.30
$53.40
$53.40
$53.40
$53.40
$25.80
$25.80
$25.80
$30.30
$31.80
$31.80
$31.80
$36.70
$36.70
$42.30
$42.30
$53.40
$53.40
$53.40
$53.40
$25.80
$25.80
$30.30
$30.30
$42.30
$53.40
$71.40
$123.10
$175.70
$175.70
$25.80
$25.80
$30.30
$30.30
$42.30
$53.40
$71.40
$123.10
$175.70
$175.70

Description

Sapphire windows are highly prized in various high-performance applications due to their remarkable mechanical, chemical, and optical properties. Made from synthetic sapphire (Al2O3), these windows are second only to diamond in terms of hardness, making them extremely durable and scratch-resistant. Their broad transmission range from the ultraviolet (UV) to the infrared (IR) spectrum further enhances their versatility in demanding environments.

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Common Specifications

General Specifications

  • Diameter Range: 5mm to 300mm
  • Diameter Tolerance: ± 0.1mm
  • Centre Thickness: Up to 50mm
  • Centre Thickness Tolerance: ± 0.05mm
  • Clear Aperture: 90%
  • Centration Tolerance: Better than 1 arc minute
  • Form Error: Better than lambda/4 (633nm) over aperture
  • Surface Roughness: Less than 1 fringe over aperture
  • Linear Dimension: Up to 120mm
  • Linear Tolerance: ± 0.1mm
  • Angular Tolerance: Better than 5 arc minutes
  • Edge Finish: Ground, blacked
  • Chamfer: 0.3 x 0.3 @ 45°
  • Surface Quality: 40-20 scratch/dig
  • Coatings: BBAR coating @1-5μm, DLC coating @ 1-5μm

Physical Properties

  • Material: Optical Sapphire Crystal (Uniaxial crystal)
  • Density: 3.98 g/cm³
  • Refractive Index: Varies with wavelength; approximately 1.75 at 5μm
  • Wavelength Range: 0.15 – 5.5μm

Mechanical Properties

  • Hardness: HK1370 kg/mm², second only to diamond, providing excellent scratch resistance.
  • Thermal Conductivity: 42 W/m*K at 25°C
  • Thermal Expansion Coefficient: 6.9 x 10^-6/°C perpendicular to the c-axis, 7.6 x 10^-6/°C parallel to the c-axis

Chemical Properties

  • Chemical Resistance: Highly resistant to acids, alkalis, and other harsh chemicals, making it suitable for use in chemically aggressive environments.
  • Insolubility: Insoluble in water and resistant to chemical corrosion, ensuring longevity and reliability in various applications.

Optical Properties

  • High Transmission: Provides high transmission without absorption in both visible and infrared regions, making them suitable for a wide range of optical applications.
  • Refractive Index: Approximately 1.75, allowing for excellent optical clarity and minimal distortion.
  • Surface Quality: Superior surface quality (40-20 scratch/dig) ensures minimal scattering and high optical performance.

Transmission Wavelength

Sapphire windows have a broad transmission range from 0.15 to 5.5 micrometers, covering both the ultraviolet and infrared spectra. This makes them versatile for various applications requiring wideband optical transparency.

  1. High-Performance Optics: Used in high-power laser systems, optical components in scientific instruments, and advanced imaging systems due to their durability and wide transmission range.
  2. Harsh Environments: Ideal for aerospace, military, and industrial applications where exposure to harsh conditions is common.
  3. Medical and Scientific Equipment: Employed in medical imaging devices and scientific instruments that require high optical clarity and resistance to chemical corrosion.

By incorporating these advanced materials into your systems, you can ensure superior performance and longevity even in the most demanding environments.

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