At ICL, we have been producing high quality crystal optics for use in infrared spectrometers, accessories, and other analytical devices since 1962. We are the only U.S. company that produces KBr crystal, a standard component of infrared spectrometers. In house, we also produce the materials for other vital crystal optics such as KCl, NaCl, AgCl, CdMnTe, and more. We also stock a large variety of spectroscopy optics made from other essentials like CaF2, BaF2, ZnS, ZnSe, Si, BK-7, etc. Circular Discs are available in all of the common sizes, typically in the range of 20mm-50mm (for use as windows common to infrared sample cells and accessories). However, we offer a large range of sizes for various applications, from tiny plugs ...
At ICL, we have been producing high quality crystal optics for use in infrared spectrometers, accessories, and other analytical devices since 1962. We are the only U.S. company that produces KBr crystal, a standard component of infrared spectrometers. In house, we also produce the materials for other vital crystal optics such as KCl, NaCl, AgCl, CdMnTe, and more. We also stock a large variety of spectroscopy optics made from other essentials like CaF2, BaF2, ZnSe, ZnS, Si, BK-7, etc. Rectangular-shaped crystals are available in all of the common sizes frequently used in sealed liquid cells along with many other infrared sampling accessories.
(54) Unpolished crystal optics are also known as blanks. These windows are finely ground with flat parallel surfaces. As sold they are opaque. They can be water polished quickly to achieve 90% transmission. The transmission of water polished KBr, KCI and NaCl will be the same as Real Crystal® IR Cards.These blanks can also be polished to precision optics. Blanks are ideal for mulls, smears and qualitative testing.
Quantity discounts and custom sizes are available. Ask for a quotation.
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Polyethylene is a useful transmission material for far infrared sampling. Polyethylene is non-absorbing beyond 14 microns. Transmission is about 80%.
High refractive index material such as ZnSe creates fringing, which is also known as channeling. Fringes are useful for path length calibration, but fringes can also interfere with spectral analysis, particularly when the refractive index of the sample is not well matched to the refractive index of the sample. Fringing can occur in a single window where the light is reflected between parallel surfaces of window and in a cell containing a pair of windows where the light is reflected off of both windows. The smaller the path length, the more dramatic the fringing effect is. Accordingly, thinner windows will have more dramatic fringes than thicker windows. Fig. 1 shows the fringe pattern of a properly assembled ...
