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Home > Dielectric Coated Optics > 14DM-DAR - Dual AR coated windows
These coatings are designed to increase the transmission over a broad spectrum
Coatings are provided by Ion Beam Sputtering (IBS) or Electron beam evaporation with/without Ion assistance coating techniques
Dual Anti-Reflection Coatings in the range 0.19-10.6 µm are available


Dual AR coated windows designed to reduce the reflectivity of a component to near-zero for two certain wavelengths. Usually these windows are used in multi-frequency laser output systems (e.g. frequency doubling). This type of coating provides very high transmission at two different wavelength. Typical wavelengths and reflection curves of an AR coating suitable for the standard laser system output at 1064 nm and 532 nm are shown below.


Standard Specifications
Substrate Dimension Tolerance+0.0, -0.1 mm
Substrate Wavefront Distortion<λ/8
Substrate Surface Quality20-10 S-D (40-20 S-D for curved surfaces)
Coating Adhesion and DurabilityPer MIL-C-675A
Residual Reflectivity<0.5%
Clear Aperture>90% of diameter
Laser Damage Threshold>4-5 J/cm2 for 10 ns pulses @ 1064 nm

Dual AR Coated Windows
Wavelength, nm Substrate material Ordering Code for AOI = 0° Ordering Code for AOI = 45° Ordering Code for AOI = 0° Ordering Code for AOI = 45°
Ø12.7x5 mmØ25.4x5 mm
266+532UVFS14DM-05-DAR1-0-214DM-05-DAR1-45-214DM-1-DAR1-0-214DM-1-DAR1-45-2
343+1030UVFS14DM-05-DAR2-0-214DM-05-DAR2-45-214DM-1-DAR2-0-214DM-1-DAR2-45-2
355+532UVFS14DM-05-DAR3-0-214DM-05-DAR3-45-214DM-1-DAR3-0-214DM-1-DAR3-45-2
355+1064UVFS14DM-05-DAR4-0-214DM-05-DAR4-45-214DM-1-DAR4-0-214DM-1-DAR4-45-2
400+800UVFS14DM-05-DAR6-0-114DM-05-DAR6-45-114DM-1-DAR6-0-114DM-1-DAR6-45-1
515+1030UVFS14DM-05-DAR8-0-114DM-05-DAR8-45-114DM-1-DAR8-0-114DM-1-DAR8-45-1
532+1064UVFS14DM-05-DAR9-0-114DM-05-DAR9-45-114DM-1-DAR9-0-114DM-1-DAR9-45-1
510-532 + 1020-1070UVFSN/A14DM-05-DAR11-45-2N/A14DM-1-DAR11-45-2


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