Custom Filters

Excelitas’ diverse range of wavelength selective coatings are characterized by optimum transmittance and sharp spectral edge transitions. They include bandpass filters, long-wave and short-wave pass filters, notch filters, dichroics, trichroics, harmonic separators as well as spatially variable components. Utilizing our ion beam sputtering technology, our custom filters have exceptional wavelength stability with respect to changes in ambient temperature and humidity.

Product List

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Bandpass Filters

Excelitas offers bandpass filters with exceptional wavelength stability in ambient temperature and humidity, using our Ion Beam Sputtering (IBS) technology. This highly controlled deposition process allows us to manufacture filters that meet your most demanding spectral requirements. Our infrared bandpass filters provide the optimum transmittance, highest blocking, and sharp spectral edges.

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VariFi Linear Variable Filters

Excelitas VariFi™ linear variable filters provide a unique solution for controlling background noise and higher-order effects in spectrometers. Our proprietary technology enables cost-effective production of linearly variable filters over a wide range of sizes. These filters are available in the visible, near infrared, and mid-infrared spectral ranges and can be delivered on various substrate materials.

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Dichroic Filters

Excelitas offers a diverse range of dichroic coatings that precisely control laser system light. Various technologies, from evaporative to ion beam sputtered coatings are available to match the specific component's application. Our infrared dichroic filters provide the optimum transmittance and sharp spectral transition edges with exceptional wavelength stability for ambient temperature and humidity changes.

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Edge Filters

Using our Ion Beam Sputtering (IBS) technology, Excelitas’ edge filters provide bandpass and sharp edge filters that have exceptional wavelength stability for ambient temperature and humidity changes. This highly controlled deposition process ensures that these edge filters are manufactured to meet the most demanding spectral requirements. Furthermore, our infrared edge filters provide the optimum transmittance, high blocking, and offer sharp spectral edges.

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Multi-Band Filters

Excelitas offers multi-band filters that deliver a unique combination of high reflectivity and transmission at selected multiple spectral regions. Our multi-spectral optics provide optimum transmittance, sharp edges, exceptional blocking with excellent wavefront quality, and high laser damage resistance making them ideal for demanding applications that require high optical performance and outstanding environmental stability.