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Silicon (Si) Windows - Uncoated & AR Coated

UQG Optics optical grade Silicon windows are made from the Czochralski method producing Silicon 99.9% pure.  It has a transmission range of 1.2 to 8 microns (uncoated) but for 9 microns it has a strong absorption band which is fine for using at 3-5 microns, after this float zone silicon can be supplied which does not have this absorption. The material has many benefits being a low cost material, perfect for weight delicate applications due to its low density and making it harder and less brittle than germanium. Widely used for military, imagining, scientific industries and substrates for optical coatings.

UQG Optics stock Silicon Windows come in diameters uncoated or AR coated in 3-5 microns both sides. Our custom range has the options of coatings and designs to the window.

Please contact our sales team.

Dimensions: Diameters 5mm to 200mm Squares/Rectangles: 5mm to 140mm
Squares/Rectangles: 5mm to 140mm
Thickness Range: 0.5mm to 25mm (subject to dimension)
Edge Finish: Ground or polished
Surface Quality: 80/50 to 20/10 scratch/Dig
Parallelism: Up to 1 arc minute
Material Options: Float zone N or P type; purity > 6N, orientations <100> or <111>, resistivity >100 ohm, uncoated 55-57% @3-5 microns, Polycrystalline, Monocrystalline & EMI grade lower resistivity
Coating Options: AR coatings from 1-8 microns & bandpass coatings
Options: Drilled holes, shapes, wedges, squares & rectangles

Purchase or OEM production quantities?
Ask UQG for a quote we are a major single source supply chain global supplier.

Material:
Silicon (optical) Monocrystalline Czochralski Grown (CZ)
Dimension Tolerance:
+0.00/ -0.10mm
Thickness Tolerance:
±0.10mm
Edge Finish:
Fine ground
Surface Quality:
40/20 Scratch/Dig
Surface Flatness:
1-2 Lambda (@633nm)
Parallelism:
≤ 3 Arc mins
Coating:
AR/AR 3-5 microns both sides
Transmission Range:
1.2-15 Microns (uncoated)
3-5 Microns (coated)

Please contact us for discount pricing for stock parts over 10+ and volume/OEM quantities

Currency select:

Part No Data
sheet
Description Dimensions (mm)Thickness (mm) Unit price
(1-10)
Qty
Qty
(10+)Volume pricing available for 10+, please add to quote.
OSW-101 PDF Silicon Window (uncoated) Ø 101 £12.00
QTY
Added. View quote
OSW-1251 PDF Silicon Window (uncoated) Ø 12.501 £13.00
QTY
Added. View quote
OSW-1252 PDF Silicon Window (uncoated) Ø 12.502 £15.50
QTY
Added. View quote
OSW-151 PDF Silicon Window (uncoated) Ø 151 £14.00
QTY
Added. View quote
OSW-201 PDF Silicon Window (uncoated) Ø 201 £15.00
QTY
Added. View quote
OSW-221 PDF Silicon Window (uncoated) Ø 221 £19.00
QTY
Added. View quote
OSW-251 PDF Silicon Window (uncoated) Ø 251 £16.00
QTY
Added. View quote
OSW-252 PDF Silicon Window (uncoated) Ø 252 £17.00
QTY
Added. View quote
OSW-253 PDF Silicon Window (uncoated) Ø 253 £18.00
QTY
Added. View quote
OSW-254 PDF Silicon Window (uncoated) Ø 25.41 £17.00
QTY
Added. View quote
OSW-501 PDF Silicon Window (uncoated) Ø 501 £85.00
QTY
Added. View quote
OSW-502 PDF Silicon Window (uncoated) Ø 502 £85.00
QTY
Added. View quote
OSW-503 PDF Silicon Window (uncoated) Ø 503 £80.00
QTY
Added. View quote
SWC-101 PDF Silicon Window (AR 3-5 microns) Ø 101 £55.00
QTY
Added. View quote
SWC-1251 PDF Silicon Window (AR 3-5 microns) Ø 12.501 £72.00
QTY
Added. View quote
SWC-251 PDF Silicon Window (AR 3-5 microns) Ø 251 £80.00
QTY
Added. View quote
SWC-253 PDF Silicon Window (AR 3-5 microns) Ø 253 £85.00
QTY
Added. View quote
SWC-503 PDF Silicon Window (AR 3-5 microns) Ø 503 £190.00
QTY
Added. View quote

Part Number

OSW-101

Silicon Window (uncoated)

PDF Data sheet

Thickness (mm) 1

Dimensions (mm) Ø 10

Focal Length (mm) 0

UNIT PRICE (1-50)

£12.00 Inc. VAT

QTY

Part Number

OSW-1251

Silicon Window (uncoated)

PDF Data sheet

Thickness (mm) 1

Dimensions (mm) Ø 12.50

UNIT PRICE (1-50)

£13.00 Inc. VAT

QTY

Part Number

OSW-1252

Silicon Window (uncoated)

PDF Data sheet

Thickness (mm) 2

Dimensions (mm) Ø 12.50

UNIT PRICE (1-50)

£15.50 Inc. VAT

QTY

Part Number

OSW-151

Silicon Window (uncoated)

PDF Data sheet

Thickness (mm) 1

Dimensions (mm) Ø 15

Focal Length (mm) 0

UNIT PRICE (1-50)

£14.00 Inc. VAT

QTY

Part Number

OSW-201

Silicon Window (uncoated)

PDF Data sheet

Thickness (mm) 1

Dimensions (mm) Ø 20

Focal Length (mm) 0

UNIT PRICE (1-50)

£15.00 Inc. VAT

QTY

Part Number

OSW-221

Silicon Window (uncoated)

PDF Data sheet

Thickness (mm) 1

Dimensions (mm) Ø 22

Focal Length (mm) 0

UNIT PRICE (1-50)

£19.00 Inc. VAT

QTY

Part Number

OSW-251

Silicon Window (uncoated)

PDF Data sheet

Thickness (mm) 1

Dimensions (mm) Ø 25

Focal Length (mm) 0

UNIT PRICE (1-50)

£16.00 Inc. VAT

QTY

Part Number

OSW-252

Silicon Window (uncoated)

PDF Data sheet

Thickness (mm) 2

Dimensions (mm) Ø 25

UNIT PRICE (1-50)

£17.00 Inc. VAT

QTY

Part Number

OSW-253

Silicon Window (uncoated)

PDF Data sheet

Thickness (mm) 3

Dimensions (mm) Ø 25

UNIT PRICE (1-50)

£18.00 Inc. VAT

QTY

Part Number

OSW-254

Silicon Window (uncoated)

PDF Data sheet

Thickness (mm) 1

Dimensions (mm) Ø 25.4

Focal Length (mm) 0

UNIT PRICE (1-50)

£17.00 Inc. VAT

QTY

Part Number

OSW-501

Silicon Window (uncoated)

PDF Data sheet

Thickness (mm) 1

Dimensions (mm) Ø 50

UNIT PRICE (1-50)

£85.00 Inc. VAT

QTY

Part Number

OSW-502

Silicon Window (uncoated)

PDF Data sheet

Thickness (mm) 2

Dimensions (mm) Ø 50

UNIT PRICE (1-50)

£85.00 Inc. VAT

QTY

Part Number

OSW-503

Silicon Window (uncoated)

PDF Data sheet

Thickness (mm) 3

Dimensions (mm) Ø 50

UNIT PRICE (1-50)

£80.00 Inc. VAT

QTY

Part Number

SWC-101

Silicon Window (AR 3-5 microns)

PDF Data sheet

Thickness (mm) 1

Dimensions (mm) Ø 10

UNIT PRICE (1-50)

£55.00 Inc. VAT

QTY

Part Number

SWC-1251

Silicon Window (AR 3-5 microns)

PDF Data sheet

Thickness (mm) 1

Dimensions (mm) Ø 12.50

UNIT PRICE (1-50)

£72.00 Inc. VAT

QTY

Part Number

SWC-251

Silicon Window (AR 3-5 microns)

PDF Data sheet

Thickness (mm) 1

Dimensions (mm) Ø 25

UNIT PRICE (1-50)

£80.00 Inc. VAT

QTY

Part Number

SWC-253

Silicon Window (AR 3-5 microns)

PDF Data sheet

Thickness (mm) 3

Dimensions (mm) Ø 25

UNIT PRICE (1-50)

£85.00 Inc. VAT

QTY

Part Number

SWC-503

Silicon Window (AR 3-5 microns)

PDF Data sheet

Thickness (mm) 3

Dimensions (mm) Ø 50

UNIT PRICE (1-50)

£190.00 Inc. VAT

QTY

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