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Infrasil® (Optical Quartz) Windows


  • Uncoated Windows for 300 nm - 3 µm
  • 1.0 mm Thick Windows
  • Ø1/2" and Ø1" Versions Available
  • Offer Enhanced Transmission Above 1 µm

UDP10

(Ø1")

UDP05

(Ø1/2")

Related Items


Please Wait
Flat Window Selection Guide
Wavelength Range Substrate Material
150 nm - 5.0 μm Sapphire
180 nm - 8.0 μm Calcium Fluoride (CaF2)
185 nm - 2.1 μm UV Fused Silica
200 nm - 6.0 μm Magnesium Fluoride (MgF2)
250 nm - 1.6 µm UV Fused Silica, for 45° AOI
300 nm - 3 µm Infrasil®
350 nm - 2.0 μm N-BK7
600 nm - 16 µm Zinc Selenide (ZnSe)
1.2 - 8.0 μm Silicon (Si)
2.0 - 16 μm Germanium (Ge)
3 - 5 μm Barium Fluoride (BaF2)
V-Coated Laser Windows

Features

  • Ø1/2" and Ø1" Windows with 1.0 mm Thickness
  • Flat Transmission from 300 nm to 3 µm
  • Nearly Identical Material Properties to UV Fused Silica
  • Ideal for Dispersion Management in Ultrafast Applications

These 1.0 mm thick, uncoated windows are fabricated from Infrasil®†, a type of optical quartz. Infrasil is a popular alternative to UV fused silica since the two materials have nearly identical mechanical and optical properties. Relative to UV fused silica, Infrasil offers increased internal transmission around 1380 nm, flat transmission from the UV to the mid-IR, and nearly identical dispersion. The plot above shows the total transmission of a sample window from 200 nm to 5 µm.

Please note that at 1.0 mm thick, these optics are significantly thinner than most windows, making them more delicate than their thicker counterparts. They are also too thin for standard setscrew-based optic mounts. In applications where one of these windows is being placed in an optic mount, it should be secured using a retaining ring, as is done in Fixed Optic Mounts.

Usage in Ultrafast Applications
When one of these windows is combined with our UFBS5050 Ultrafast Beamsplitter, the transmitted and reflected arms of the beamsplitter will have nearly equal group delay dispersion (GDD). For more details, please see the UFBS5050 beamsplitter's webpage.

†Infrasil is a registered trademark of Heraeus Quarzglas.

Optical Coating and Subtrates
Optic Cleaning Tutorial

Posted Comments:
Abani Nayak  (posted 2019-05-23 10:12:14.667)
I would like to have Rectangular shape of Infrasil instead of Circular. Can I get rectangular window of Infrasil with customized length, width or height?
YLohia  (posted 2019-05-23 10:06:30.0)
Hello, thank you for contacting Thorlabs. We are reaching out to you directly to discuss the possibility of offering a custom option.
jarias  (posted 2017-04-03 06:59:16.557)
Is it possible to get this window in 2 inches diameter and with AR coating for 1070 nm?
tfrisch  (posted 2017-04-19 02:44:03.0)
Hello, thank you for contacting Thorlabs. I have contacted you directly concerning more details for a quote.
Window Selection Guide (Table Sorted by Wavelength)
Substrate and Window Type Wavelength Range Available AR Coatings Reflectance over AR Coating Rangea Transmission Data Reflectance Data
Sapphire:
Flat or Wedged
150 nm - 5.0 μm Uncoated -
Raw Data
-
 -D Coating, 1.65 - 3.0 µm Ravg < 1.0% at 0° AOI
Raw Data

Raw Data
 -E1 Coating, 2.0 - 5.0 µm Ravg < 1.50%, Rabs < 3.0% (per Surface, 2.0 - 5.0 µm);
Ravg < 1.75% (per Surface, 2.0 - 4.0 µm) at 0° AOI

Raw Data

Raw Data
Calcium Fluoride (CaF2):
Flat or Wedged
180 nm - 8.0 μm  Uncoated -
Raw Data
-
-D Coating, 1.65 - 3.0 µm Ravg < 1.0%; Rabs < 2.0% at 0° AOI
Raw Data

Raw Data
UV Fused Silica:
FlatWedgedV-Coated Flat, or
V-Coated Wedged
185 nm - 2.1 μm Uncoated
(Flat or Wedged)
-
Raw Data
-
-UV Coating, 245 - 400 nm
(Flat or Wedged)
Ravg < 0.5% at 0° AOI -
Raw Data
-C3 Coating, 261 - 266 nm
(V-Coated)
Ravg < 0.5% at 0° AOI - Click to View Index Plot
Raw Data
-C6 Coating, 350 - 450 nm
(V-Coated)
Ravg < 0.5% at 0° AOI - Click to View Index Plot
Raw Data
 -A Coating, 350 - 700 nm 
(Flat or Wedged)
Ravg < 0.5% at 0° AOI -
Raw Data
 -B Coating, 650 - 1050 nm 
(Flat or Wedged)
Ravg < 0.5% at 0° AOI -
Raw Data
 -C Coating, 1050 - 1700 nm 
(Flat or Wedged)
Ravg < 0.5% at 0° AOI -
Raw Data
Magnesium Fluoride (MgF2):
Flat or Wedged
200 nm - 6.0 μm Uncoated -
Raw Data
-
Barium Fluoride (BaF2):
Wedged 
(Flat BaF2 Windows
Available Below)
200 nm - 11 µm Uncoated -
Raw Data
-
-E1 Coating, 2 - 5 µm  Ravg < 1.25%; Rabs < 2.5%  at 0° AOI
Raw Data
Icon
Raw Data
UV Fused Silica, for 45° AOI:
Flat or Wedged
250 nm - 1.6 µm Coating for 
250 nm - 450 nm
Ravg < 1.0% at 45° AOI info
Raw Data
Coating for
350 nm - 1100 nm
Ravg < 2.0% at 45° AOI info
Raw Data
Coating for
400 nm - 700 nm
Ravg < 1.0% at 45° AOI info
Raw Data
Coating for
600 nm - 1700 nm
Ravg < 1.5% at 45° AOI info
Raw Data
Coating for
700 nm - 1100 nm
Ravg < 1.0% at 45° AOI info
Raw Data
Coating for
1200 nm - 1600 nm
Ravg < 1.0% at 45° AOI info
Raw Data
Infrasil®:
Flat
300 nm - 3 µm Uncoated -
Raw Data
 -
N-BK7:
FlatWedgedV-Coated Flat, or
V-Coated Wedged
350 nm - 2.0 μm Uncoated
(Flat or Wedged)
-
Raw Data
-
 -A Coating, 350 - 700 nm  
(Flat or Wedged)
Ravg < 0.5% at 0° AOI -
Raw Data
-C7 Coating, 400 - 700 nm
(V-Coated)
Ravg < 0.5% at 0° AOI - Click to View Index Plot
Raw Data
-C10 Coating, 523 - 532 nm (V-Coated) Ravg < 0.5% at 0° AOI - Click to View Index Plot
Raw Data
-C11 Coating, 610 - 860 nm 
(V-Coated)
Ravg < 0.5% at 0° AOI - Click to View Index Plot
Raw Data
-B Coating, 650 - 1050 nm 
(Flat or Wedged)
Ravg < 0.5% at 0° AOI -
Raw Data
-C13 Coating, 700 - 1100 nm 
(V-Coated)
Ravg < 0.5% at 0° AOI - Click to View Index Plot
Raw Data
C14 Coating, 1047 - 1064 nm
(V-Coated)
Ravg < 0.5% at 0° AOI - Click to View Index Plot
Raw Data
-C15 Coating, 523 - 532 nm
& 1047 - 1064 nm
(V-Coated) 
Ravg < 0.5% at 0° AOI - Click to View Index Plot
Raw Data
-C Coating, 1050 - 1700 nm 
(Flat or Wedged)
Ravg < 0.5% at 0° AOI -
Raw Data
Zinc Selenide (ZnSe):
Flat or Wedged
600 nm - 16 µm Uncoated -
Raw Data
-
-D Coating, 1.65 - 3.0 µm Ravg < 1.0%; Rabs < 2.0% at 0° AOI
Raw Data

Raw Data
-E4 Coating, 2 - 13 µm
(Only Flat)
Ravg < 3.5%; Rabs < 6% at 0° AOI
Raw Data

Raw Data
-E2 Coating, 4.5 - 7.5 µm
(Only Flat)
Ravg < 1.0%; Rabs < 2.0% at 0° AOI
Raw Data

Raw Data
-E3 Coating, 7 - 12 µm
(Only Wedged)
Ravg < 1.0%; Rabs < 2.0% at 0° AOI
Raw Data
Icon
Raw Data
-G Coating, 7 - 12 µm
(Only Flat)
Ravg < 1% at 0° AOI
Raw Data

Raw Data
Silicon (Si):
Flat or Wedged
1.2 - 8.0 μm Uncoated -
Raw Data
-
 -E1 Coating, 2 - 5 µm
(Only Wedged)
Ravg < 1.25%; Rabs < 2.5% at 0° AOI
Raw Data
Icon
Raw Data
-E Coating, 3 - 5 µm
(Only Flat)
Ravg < 2% at 0° AOI
Raw Data

Raw Data
Germanium (Ge):
Flat or Wedged
2.0 - 16 μm Uncoated -
Raw Data
-
-C9 Coating, 1.9 - 6 µm
(Only Flat)
Ravg < 2% at 0° AOI
Raw Data

Raw Data
-G Coating, 7 - 12 µm
(Only Flat)
Ravg < 1% at 0° AOI
Raw Data

Raw Data
-E3 Coating, 7 - 12 µm
(Only Wedged)
Ravg < 1.0%; Rabs < 2.0% at 0° AOI
Raw Data
Icon
Raw Data
Barium Fluoride (BaF2):
Flat 
(Wedged BaF2 Windows Available Above)
3 - 5 μm -E Coating, 3 - 5 µm Ravg < 2% at 0° AOI
Raw Data

Raw Data
  • Reflectance is given per surface and each window is coated on both sides.

Infrasil® Windows, Uncoated

Recommended Beam Geometry
Recommended Configuration for Balanced Dispersion in Transmitted and Reflected Beam of 50:50 Ultrafast Beamsplitter (Only Necessary for Sub-50 fs Pulses)
Item # UDP05 UDP10
Diameter  1/2" (12.7 mm) 1" (25.4 mm)
Diameter Tolerance +0.0 / -0.1 mm
Thickness 1.0 mm
Thickness Tolerance ±0.1 mm
Clear Aperture >90% of Diameter >80% of Diameter
Parallelism <5 arcmin
Transmitted Wavefront Errora λ/10 Over Clear Aperture
Surface Quality 10-5 Scratch-Dig
Wavelength Range 300 nm - 3 µm (Uncoated)
Substrate Infrasil®
Transmission Data
Raw Data
  • Measured at 633 nm
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
UDP05 Support Documentation
UDP05Ø1/2" Infrasil® Window, t = 1.0 mm
$77.37
5-8 Days
UDP10 Support Documentation
UDP10Ø1" Infrasil® Window, t = 1.0 mm
$88.47
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Last Edited: Apr 24, 2014 Author: Dan Daranciang