Compare Model Drawings, CAD & Specs Diameter Thickness Surface Flatness Surface Quality Parallelism Availability Price
05SW8-180
$243
05SW8-180 12.7 mm 2.0 mm λ/4 @ 633 nm 40-20 scratch-dig ≤3 arc min $243
10SW8-180
$292
10SW8-180 25.4 mm 2.0 mm λ/4 @ 633 nm 40-20 scratch-dig ≤3 arc min $292
20SW8-180
$879
20SW8-180 50.8 mm 2.0 mm λ/4 @ 633 nm 40-20 scratch-dig ≤3 arc min $879
SAW11
$67
SAW11 5.0 mm 1.0 mm 2λ @ 633 nm 80-50 scratch-dig ≤3.5 arc min $67
SAW12
$67
SAW12 6.35 mm 0.5 mm 2λ @ 633 nm 80-50 scratch-dig ≤3.5 arc min $67
SAW13
$67
SAW13 9.50 mm 0.5 mm 2λ @ 633 nm 80-50 scratch-dig ≤3.5 arc min $67
SAW14
$80
SAW14 10.0 mm 1.0 mm 2λ @ 633 nm 80-50 scratch-dig ≤3.5 arc min $80
SAW15
$80
SAW15 12.7 mm 3.2 mm 2λ @ 633 nm 80-50 scratch-dig ≤3.5 arc min $80
SAW17
$80
SAW17 13.0 mm 0.5 mm 2λ @ 633 nm 80-50 scratch-dig ≤3.5 arc min $80
SAW18
$85
SAW18 15.0 mm 2.0 mm 2λ @ 633 nm 80-50 scratch-dig ≤3.5 arc min $85
SAW19
$85
SAW19 17.25 mm 2.0 mm 2λ @ 633 nm 80-50 scratch-dig ≤3.5 arc min $85
SAW21
$85
SAW21 22.0 mm 1.0 mm 2λ @ 633 nm 80-50 scratch-dig ≤3.5 arc min $85
SAW22
$91
SAW22 23.75 mm 1.0 mm 2λ @ 633 nm 80-50 scratch-dig ≤3.5 arc min $91
SAW23
$101
SAW23 25.0 mm 2.3 mm 2λ @ 633 nm 80-50 scratch-dig ≤3.5 arc min $101
SAW24
$101
SAW24 25.4 mm 2.3 mm 2λ @ 633 nm 80-50 scratch-dig ≤3.5 arc min $101
SAW25
$133
SAW25 30.0 mm 1.0 mm 2λ @ 633 nm 80-50 scratch-dig ≤3.5 arc min $133
SAW26
$133
SAW26 31.8 mm 1.0 mm 2λ @ 633 nm 80-50 scratch-dig ≤3.5 arc min $133
SAW27
$211
SAW27 35.0 mm 1.0 mm 2λ @ 633 nm 80-50 scratch-dig ≤3.5 arc min $211
SAW28
$227
SAW28 38.1 mm 1.0 mm 2λ @ 633 nm 80-50 scratch-dig ≤3.5 arc min $227
SAW29
$275
SAW29 40.0 mm 2.0 mm 2λ @ 633 nm 80-50 scratch-dig ≤3.5 arc min $275
SAW31
$423
SAW31 50.8 mm 3.15 mm 2λ @ 633 nm 80-50 scratch-dig ≤3.5 arc min $423
SAW32
$847
SAW32 75.0 mm 2.0 mm 2λ @ 633 nm 80-50 scratch-dig ≤3.5 arc min $847

Specifications

  • Material
    Sapphire
  • Antireflection Coating
    Uncoated
  • Cleaning
    See How to Clean Optics
  • Clear Aperture
    SW8: central 80% of diameter
    SAW: central 90% of diameter
  • Birefringence
    SAW: 0.008 for visible light orthogonal to optical axis
  • Edge Finish
    Ground and beveled
  • Thermal Expansion Coefficient
    8.4 x 10-6 K-1
  • Thermal Limit
    22 W m-1 K-1
  • Wavelength Range
    150 to 5000 nm

Features

Handles High Temperatures and Pressures

Sapphire windows are highly tolerant of extreme temperature and pressure differences. These windows are commonly used as viewports enable viewing inside of vacuum chambers, or chambers containing high temperature plasma.

Wide Transmittance Range

Uncoated Sapphire is transparent across a wide wavelength range from 170 nm to 5.5 µm.

Unique Sapphire Material Properties

Sapphire is a single crystal form of Al2O3, with a favorable combination of chemical, mechanical and optical properties. Sapphire is resistant to attack by strong acids, enabling use in a corrosive atmosphere. It is resistant to scratch and abrasion with very high Knoop hardness of 1800 parallel to the optic axis (C-axis), 2200 perpendicular to the optic axis.

Note on Birefringence

The SAW series sapphire windows are provided with a random axis orientation. As sapphire is slightly birefringent, this may result in slight alteration of the polarization state of transmitted light.

Resources

Selection Guides

Technical Notes