Dielectric Coated Optics

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Product Catalog 2015


Laser optics direct from stock. All products are inspected at metrology laboratory, certified and delivered worldwide direct from European Union.

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Dual AR Coated Windows (DAR)

Dual AR Coated Windows (DAR)
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Diameter tolerance +0/-0.1 mm
Thickness tolerance ±0.1 mm
Clear aperture >90 %
Surface quality 20-10 S-D
Transmitted wavefront distortion (TWD) <λ/8 @ 632.8 nm
Protective chamfers <0,25 mm x 45°
Measured reflectivity R<0.3 % @ AOI=0°
Ravg<0.5 % @ AOI=45°
Coating adhesion and durability Per MIL-C-675A
Laser damage threshold reports www.altechna.com/lidt
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Attention! You can customise this product to your needs.
Usually these coatings are used in multi-frequency laser output systems (e.g. frequency doubling). This coating provides very high transmission at two different wavelength. Typical wavelengths and reflection curves of an AR coating suitable for the prevalent laser system output at 1064nm and 532nm are shown below.

Coatings are provided by Ion Beam Sputtering (IBS) or Electron beam evaporation with/without Ion assistance coating techniques.
varna These coatings are designed to increase transmission over a broad spectrum

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Choose from 40 Dual AR Coated Windows (DAR)