WINDOW MATERIALS FUSED SILICA UNCOATED-COATED
Description
On most systems, both the outer vacuum housing (warm) and inner radiation shield (cold) windows may be easily replaced by the user within minutes. A variety of optical materials are available for different wavelengths and applications. The standard option is a VIS-NIR (400-1000nm) with Anti-Reflective (AR) coating.
The size of and number of optical windows is determined by the outer housing configuration - please refer to your system specifications for window sizing and quantities. Made from UV-grade synthetic fused silica. Applications include laser set-ups (i.e. at Brewster’s angle), emitter/detector protection devices (such as in spectrophotometers), and imaging systems involving ultraviolet wavelengths. These windows are typically used for both the inner and outer windows of the sample chamber unless specified otherwise. Figure 1 below is a transmission curve for the uncoated substrate.
This standard substrate is available with various anti-reflection coatings. These coatings reduce the surface losses at these wavelengths. The curves in Figure 2 indicate the coated surface losses. You can estimate transmission by doubling these curves and subtracting from 100%. Outside these bands, the transmission of a coated surface is not predictable.
WINDOW MATERIALS FUSED SILICA UNCOATED-COATED
Specifications |
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| Application Spectrum: | Visible (VIS), Near Infrared (NIR) |
| Wavelength Range: | 100-2000 nm |
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Frequently Asked Questions
Yes, on most systems, both the outer vacuum housing (warm) and inner radiation shield (cold) windows may be easily replaced by the user within minutes.
Applications include laser set-ups (i.e. at Brewster’s angle), emitter/detector protection devices (such as in spectrophotometers), and imaging systems involving ultraviolet wavelengths.
The standard option is a VIS-NIR (400-1000nm) with Anti-Reflective (AR) coating.
Figure 1 below is a transmission curve for the uncoated substrate.
A variety of optical materials are available for different wavelengths and applications, including fused silica, BK7, sapphire, calcium fluoride, potassium bromide, germanium, silicon, sodium chloride, zinc selenide, TPX, HRFZ-Si, crystal quartz, Spectrosil 2000, BaF2, and aluminized Kapton.