Blackened Opto-mechanical Components

Black coated opto-mechanical components are used to provide a variety of mounting or positioning options for a wide range of optical applications. High absorbing black coating used to reduce noise and unwanted reflections and to increase the efficiency of the optical system.

Acktar’s black coating process and equipment fit large-scale production of black coated optical components such as baffles, apertures, blackened lenses, DMD projector parts, remote sensing targets, optical choppers, edge blackened optics etc. To coat your parts please contact us.

Standard components such as apertures, pinholes, chopper blades, beam dumps, extension tubes are also available as shelf products, and can be purchased on line.

Acktar is constantly adding new products to serve you better.

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Acktar Light Absorbing Coatings for Energetic Laser Applications

Acktar Black coatings are excellent performers where a combination of high absorptance and high tolerance of laser energy is required.

The Laser Induced Damage Threshold (LIDT) of a coating cannot be stated in general but depends upon a number of factors – wave length, pulse width, pulse rate, laser waveform, etc.

In the case of Acktar’s black coatings – which absorb light – the LIDT depends also upon the ability of the substrate to quickly disperse the absorbed thermal energy.

Acktar coatings have been tested under a variety of test conditions and the results presented show that Acktar Black Coatings exhibit very impressive LIDT values under a broad variety of conditions and constitute an excellent choice where a combination of high absorptance and high tolerance of laser energy is required.

Wavelength Black coating type Substrate LIDT – J/sqcm
1-on-1 10-on-1
EUV (~13nm) Magic Black > 3.5 below 3.5

 

 Wavelength Black coating type Substrate  LIDT
Kw/sqcm J/sqcm1
193 nm pulsed (10ns) Magic Black SS – 0.65 mm 9,500 0.096
Fractal Black SS – 0.65 mm 8,000 0.081
AI – 3 mm 8,600 0.086

 

 Wavelength Black coating type Substrate  LIDT
30 sec 60 sec
532nm quasi CW (1μs; 20kHz) Magic Black SS – 0.65 mm 1,500 780
Fractal Black SS – 0.65 mm 900 560
AI – 3 mm exceeds 8000 (test limit)

 

 Wavelength Black coating type Substrate  LIDT
30 sec 60 sec
1064nm quasi CW(1μs; 20kHz) Magic Black SS – 0.65 mm 600 500
Fractal Black SS – 0.65 mm 400 400
AI – 3 mm exceeds 8000 (test limit)

 

Wavelength Black coating type Substrate LIDT – w/sqcm
10,600 nm CW Fractal BLack exceeds 3,000 (test limit)