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25mm Dia., 3mm Thick, NIR II Coated, Suprasil Window

Suprasil® Windows

Suprasil® Windows

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Stock #25-592 10 to 12 days
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₹13,703
Qty 1-5
₹13,703
Qty 6+
₹10,962
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Specifications

General

Type:
Protective Window

Physical & Mechanical Properties

Bevel:
Protective as needed
Clear Aperture (%):
90
Clear Aperture CA (mm):
22.50
Diameter (mm):
25.00 +0.00/-0.10
Thickness (mm):
3.00 ±0.10
Edges:
Fine Ground
Knoop Hardness (kg/mm2):
591
Parallelism (arcsec):
<5
Poisson's Ratio:
0.17
Young's Modulus (GPa):
70

Optical Properties

Abbe Number (vd):
67.8
Coating:
NIR II (750 - 1550nm)
Coating Specification:
Rabs ≤1.5% @ 750 - 800nm
Rabs ≤1.0% @ 800 - 1550nm
Ravg ≤0.7% @ 750 - 1550nm
Index of Refraction (nd):
1.459
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Suprasil® 300
Surface Quality:
10-5
Transmitted Wavefront, P-V:
λ/10
Wavelength Range (nm):
750 - 1550

Material Properties

Coefficient of Thermal Expansion CTE (10-6/°C):
0.51 (0 to +100°C)
0.58 (0 to +200°C)
Density (g/cm3):
2.20

Regulatory Compliance

RoHS:
Certificate of Conformance:

Product Details

  • High Transmission from 200 to 3500nm
  • <1 ppm OH Content for Minimal Absorption Losses
  • 10-5 Surface Quality and up to λ/10 TWD

Suprasil® Windows are constructed from high purity synthetic fused silica and provide high, flat transmission from 200 to 3500nm. Suprasil has similar mechanical properties to fused silica with the added benefit of having no absorption bands in the visible or infrared spectra, resulting in no transmission loss between 1400 - 2700nm. Compared to Infrasil®, Suprasil has lower absorption with a <1 ppm OH content, causing negligible increase in temperature from bulk absorption when used with high powered lasers. Suprasil Windows are ideal for laser material processing, medical laser applications, or applications using Nd:doped or 2 micron lasers. 

Technical Information

Transmission of Suprasil 300 compared to Corning 7980

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