Sapphire Optical Windows

High transmittance from 150 nm to 5 µm
Extremely hard and durable than standard glass
Ideal for thermally demanding environments
1/2", 1", and 2" diameter sizes

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Overview
Specifications
Ordering
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Sapphire optical windows are ideal for applications where high pressure, vacuum, or corrosive atmospheres are a consideration. Sapphire, a single crystal form of Al₂O₃, is resistant to attack by strong acids due to its high dielectric constant. It has high compressive strength and a high melting point. It is also resistant to UV radiation darkening. Our sapphire optical windows are not coated, but a single layer coating of MgF₂ on each surface of the window increases the single surface transmittance to 99% throughout the entire visible spectral region. Please note the SAW series sapphire windows are provided in random axis orientation by default and its birefringent nature could affect the polarization state of your application.

Specifications

	SW8-180 Series	SAW Series
Material	Sapphire
Thickness	2.0 mm	See Substrate Info Table
Size tolerance	+0.0/-0.25	See Substrate Info Table
Edge Finish	Ground and beveled
Refractive Index	1.765 @ 632.8 nm
Surface Quality	40-20 scratch-dig	80-50 scratch-dig
Surface Flatness	λ/4 @ 633 nm	2 λ per 25.4 mm @ 632.8 nm
Parallelism	≤3 arc min (≤0.9 mrad)	≤3.5 arc min
Clear Aperture	>80% of central diameter	Central 90% of diameter
Hardness (Knoop)	1370 kg mm^-2
Young's modulus	3.4 x 10¹¹ N m^-2
Thermal Limit	22 W m^-1 K^-1
Thermal expansion coefficient	8.4 x 10^-6 K^-1

Substrate Info Table

Model	Surface Quality (scratch-dig)	Diameter (mm)	Thickness (mm)
05SW8-180	40-20	12.7	2.0
10SW8-180	40-20	25.4	2.0
20SW8-180	40-20	50.8	2.0
SAW10	80-50	2.5 ± 0.05	0.5 ± 0.05
SAW11	80-50	5.0 ± 0.15	1.0 ± 0.05
SAW12	80-50	6.35 ± 0.05	0.5 ± 0.05
SAW13	80-50	9.5 ± 0.15	0.5 ± 0.15
SAW14	80-50	10.0 ± 0.25	1.0 ± 0.15
SAW15	80-50	12.7 ± 0.05	3.175 ± 0.05
SAW16	80-50	12.75 ± 0.15	1.0 ± 0.10
SAW17	80-50	13.0 ± 0.30	0.5 ± 0.10
SAW18	80-50	15.0 ± 0.25	2.0 ± 0.10
SAW19	80-50	17.25 ± 0.10	2.0 ± 0.10
SAW20	80-50	20.0 ± 0.05	2.0 ± 0.10
SAW21	80-50	22.0 ± 0.05	1.0 ± 0.05
SAW22	80-50	23.75 ± 0.10	1.0 ± 0.05
SAW23	80-50	25.0 ± 0.10	2.3 ± 0.10
SAW24	80-50	25.4 ± 0.05	2.25 ± 0.10
SAW25	80-50	30.0 ± 0.25	1.0 ± 0.10
SAW26	80-50	31.75 ± 0.25	1.0 ± 0.05
SAW27	80-50	35.0 ± 0.25	1.0 ± 0.10
SAW28	80-50	38.1 ± 0.25	1.0 ± 0.05
SAW29	80-50	40.0 ± 0.25	2.0 ± 0.10
SAW30	80-50	63.5 ± 0.25	2.0 ± 0.10
SAW31	80-50	50.8 ± 0.05	3.15 ± 0.05
SAW32	80-50	75.0 ± 0.13	2.0 ± 0.05

Model	Description	avail raw	Availability	price raw	Price	Qty. MULTI ADD
05SW8-180	Sapphire Window, 12.70 mm Diameter, 2.00 mm Thick	9	9 Weeks	199	$199.00	ADD
10SW8-180	Sapphire Window, 25.40 mm Diameter, 2.00 mm Thick	0	In Stock	239	$239.00	ADD
20SW8-180	Sapphire Window, 50.80 mm Diameter, 2.00 mm Thick	0	In Stock	719	$719.00	ADD
SAW10	Sapphire Window, 2.50 mm Diameter, 0.50 mm Thick	0	In Stock	48	$48.00	ADD
SAW11	Sapphire Window, 5.00 mm Diameter, 1.00 mm Thick	0	In Stock	60	$60.00	ADD
SAW12	Sapphire Window, 6.35 mm Diameter, 0.50 mm Thick	0	In Stock	60	$60.00	ADD
SAW13	Sapphire Window, 9.50 mm Diameter, 0.50 mm Thick	0	In Stock	60	$60.00	ADD
SAW14	Sapphire Window, 10.0 mm Diameter, 1.00 mm Thick	0	In Stock	71	$71.00	ADD
SAW15	Sapphire Window, 12.70 mm Diameter, 3.175 mm Thick	0	In Stock	71	$71.00	ADD
SAW16	Sapphire Window,12.75 mm Diameter, 1.00 mm Thick	0	In Stock	71	$71.00	ADD
SAW17	Sapphire Window, 13.00 mm Diameter, 0.50 mm Thick	0	In Stock	71	$71.00	ADD
SAW18	Sapphire Window, 15.00 mm Diameter, 2.00 mm Thick	0	In Stock	76	$76.00	ADD
SAW19	Sapphire Window, 17.25 mm Diameter, 2.00 mm Thick	0	In Stock	76	$76.00	ADD
SAW20	Sapphire Window, 20.00 mm Diameter, 2.00 mm Thick	0	In Stock	81	$81.00	ADD
SAW21	Sapphire Window, 22.00 mm Diameter, 1.00 mm Thick	0	In Stock	81	$81.00	ADD
SAW22	Sapphire Window, 23.75 mm Diameter, 1.00 mm Thick	0	In Stock	81	$81.00	ADD
SAW23	Sapphire Window, 25.00 mm Diameter, 2.30 mm Thick	0	In Stock	90	$90.00	ADD
SAW24	Sapphire Window, 25.40 mm Diameter, 2.30 mm Thick	0	In Stock	90	$90.00	ADD
SAW25	Sapphire Window, 30.00 mm Diameter, 1.00 mm Thick	0	In Stock	107	$107.00	ADD
SAW26	Sapphire Window, 31.75 mm Diameter, 1.00 mm Thick	0	In Stock	107	$107.00	ADD
SAW27	Sapphire Window, 35.00 mm Diameter, 1.00 mm Thick	0	In Stock	157	$157.00	ADD
SAW28	Sapphire Window, 38.10 mm Diameter, 1.00 mm Thick	0	In Stock	177	$177.00	ADD
SAW29	Sapphire Window, 40.00 mm Diameter, 2.00 mm Thick	2	2 Weeks	225	$225.00	ADD
SAW30	Sapphire Window, 63.50 mm Diameter, 2.00 mm Thick	0	In Stock	415	$415.00	ADD
SAW31	Sapphire Window, 50.80 mm Diameter, 3.20 mm Thick	0	In Stock	351	$351.00	ADD
SAW32	Sapphire Window, 75.00 mm Diameter, 2.00 mm Thick	0	In Stock	694	$694.00	ADD

Newport Resource e-Catalogs *

*e-Catalog pages include the most current information available at the time of printing.

Sapphire Optical Windows

Specifications

Substrate Info Table

Newport Resource e-Catalogs *

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