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We will shortly be offering a large selection of optical components for the Infrared to Ultraviolet regions of the spectrum in our web shop.

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Our optical components are suitable for a wide range of applications. If you are interested in a particular area, please click on the link below.

1:Goniometer | 2-3: Interferometer | 4: Visual Inspection

Quality can be verified – and we don’t just test our own products.

After decades spent manufacturing the most advanced optical components from our own crystals we demand the best. Using our top of the range equipment we can assess and test your products using the same high standards we apply to our own.

Our long standing experience in this area means we know what counts and we are happy to share our know-how: we can measure, check and certify your components, materials and samples:

Transmission spectroscopy	115 nm - 40 μm on plane parallel samples up to 100 mm thickness

Stress induced birefringence Birefringence, or double refraction, is the decomposition of a ray of light into two rays when it passes through certain anisotropic materials. Isotropic solids do not exhibit birefringence unless under mechanical stress, either due to stress applied externally or as part of the manufacturing process. Mechanical stress affects the optical properties of certain materials which is undesirable in many applications (e.g. lenses for polarizing optics). The ability to understand and quantify residual stress and its effect on optical components is therefore essential in controlling the parameters of crystal growth and optimising quality.	on plane parallel samples up to 210 mm diameter

Stress induced birefringence Birefringence, or double refraction, is the decomposition of a ray of light into two rays when it passes through certain anisotropic materials. Isotropic solids do not exhibit birefringence unless under mechanical stress, either due to stress applied externally or as part of the manufacturing process. Mechanical stress affects the optical properties of certain materials which is undesirable in many applications (e.g. lenses for polarizing optics). The ability to understand and quantify residual stress and its effect on optical components is therefore essential in controlling the parameters of crystal growth and optimising quality.

on plane parallel samples up to 210 mm diameter

Surface roughness	on polished samples up to 180 mm diameter

Wavefront distortion Where a homogenous light beam consisting of many light waves passes through an inhomogeneous material with a varying refractive index n (density variations in the material) or of non-uniform thickness, the individual light waves will be distorted proportionally to the distance travelled through the material, resulting in a deterioration of the optical image. This can be measured by analyzing the interference patterns in a two-arm or phase-shifting interferometer, where one “arm” contains the material to be measured and the other a reference sample.	on plane parallel samples up to 200 mm diameter

Wavefront distortion Where a homogenous light beam consisting of many light waves passes through an inhomogeneous material with a varying refractive index n (density variations in the material) or of non-uniform thickness, the individual light waves will be distorted proportionally to the distance travelled through the material, resulting in a deterioration of the optical image. This can be measured by analyzing the interference patterns in a two-arm or phase-shifting interferometer, where one “arm” contains the material to be measured and the other a reference sample.

on plane parallel samples up to 200 mm diameter

Centring error	on lenses and parallel windows

If you are interested in using our Testing Service please use the request form or call us for a quote.

Material

Please click on the link below for more information about our materials or choose from the transmission curve. Here you can select the correct material for your spectral range. Please click on the link on the left.

This symbol denotes crystal grown in-house.

Who we are

Our Service for you

Webshop

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Quality can be verified – and we don’t just test our own products.

Material