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Sapphire Optical Windows

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Overview

Uncoated Sapphire windows are ideal for harsh conditions, including environments subject to high temperatures, high pressures, strong vacuum, or corrosive atmospheres. Sapphire has high compressive strength and is resistant to attack from strong acid.

Ideal for high temperature, high pressure, or strong vacuum environments
Highly corrosion resistant
Transparent from 170 nm to 5.5 µm
Extremely hard and more durable than standard optical glass

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Products

Showing 22 of 22 total products

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Compare	Model	Diameter	Thickness	Surface Flatness	Surface Quality	Parallelism	Availability	Price	Brand
05SW8-180 Sapphire Optical Window, 12.70 mm Diameter, 2.00 mm Thick $267.00 Show	05SW8-180 Sapphire Optical Window, 12.70 mm Diameter, 2.00 mm Thick	12.7 mm	2.0 mm	λ/4 @ 633 nm	40-20 scratch-dig	≤3 arc min	Show	$267.00	Newport
10SW8-180 Optical Window, Sapphire, 25.40 mm Diameter, 2.00 mm Thick $321.00 Show	10SW8-180 Optical Window, Sapphire, 25.40 mm Diameter, 2.00 mm Thick	25.4 mm	2.0 mm	λ/4 @ 633 nm	40-20 scratch-dig	≤3 arc min	Show	$321.00	Newport
20SW8-180 Optical Window, Sapphire, 50.80 mm Diameter, 2.00 mm Thick $967.00 Show	20SW8-180 Optical Window, Sapphire, 50.80 mm Diameter, 2.00 mm Thick	50.8 mm	2.0 mm	λ/4 @ 633 nm	40-20 scratch-dig	≤3 arc min	Show	$967.00	Newport
SAW11 Optical Window, Sapphire, 5.00 mm Diameter, 1.00 mm Thick $67.00 Show	SAW11 Optical Window, Sapphire, 5.00 mm Diameter, 1.00 mm Thick	5.0 mm	1.0 mm	2λ @ 633 nm	80-50 scratch-dig	≤3.5 arc min	Show	$67.00	Newport
SAW12 Optical Window, Sapphire, 6.35 mm Diameter, 0.50 mm Thick $67.00 Show	SAW12 Optical Window, Sapphire, 6.35 mm Diameter, 0.50 mm Thick	6.35 mm	0.5 mm	2λ @ 633 nm	80-50 scratch-dig	≤3.5 arc min	Show	$67.00	Newport
SAW13 Optical Window, Sapphire, 9.50 mm Diameter, 0.50 mm Thick $67.00 Show	SAW13 Optical Window, Sapphire, 9.50 mm Diameter, 0.50 mm Thick	9.50 mm	0.5 mm	2λ @ 633 nm	80-50 scratch-dig	≤3.5 arc min	Show	$67.00	Newport
SAW14 Optical Window, Sapphire, 10.0 mm Diameter, 1.00 mm Thick $80.00 Show	SAW14 Optical Window, Sapphire, 10.0 mm Diameter, 1.00 mm Thick	10.0 mm	1.0 mm	2λ @ 633 nm	80-50 scratch-dig	≤3.5 arc min	Show	$80.00	Newport
SAW15 Optical Window, Sapphire, 12.70 mm Diameter, 3.175 mm Thick $80.00 Show	SAW15 Optical Window, Sapphire, 12.70 mm Diameter, 3.175 mm Thick	12.7 mm	3.2 mm	2λ @ 633 nm	80-50 scratch-dig	≤3.5 arc min	Show	$80.00	Newport
SAW17 Optical Window, Sapphire, 13.00 mm Diameter, 0.50 mm Thick $80.00 Show	SAW17 Optical Window, Sapphire, 13.00 mm Diameter, 0.50 mm Thick	13.0 mm	0.5 mm	2λ @ 633 nm	80-50 scratch-dig	≤3.5 arc min	Show	$80.00	Newport
SAW18 Optical Window, Sapphire, 15.00 mm Diameter, 2.00 mm Thick $85.00 Show	SAW18 Optical Window, Sapphire, 15.00 mm Diameter, 2.00 mm Thick	15.0 mm	2.0 mm	2λ @ 633 nm	80-50 scratch-dig	≤3.5 arc min	Show	$85.00	Newport

Showing 1 to 010 of 22 entries

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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.