Laser Beam Dumps - Acktar black coatings

Laser Beam Dumps

Laser Beam Dumps Main
Laser Beam Dumps Product
Black Coated Tube Laser Beam Dump 80mm
laser beam dumps 2
Black Coated Tube Laser Beam Dump 80mm
Laser Beam Dumps 2 (1)
Laser Beam Dumps
  • Reflectivity factor: <10-6 (tube beam dumps)
  • Laser Beam diameter: 30mm – 81mm
  • Laser Beam power density up to 20W/cm2
  • Wavelengths range: 100nm - 10µm
  • Standard mounting thread: M6 x 1.0
  • Unique: C-Mount thread (additional ring LBD-T-30-C1)


Low Reflection
Light Weight
REACH ROHS Compliant
Low Outgassing


This is our newest “must have” item. This device increases safety and reduces the risk of laser damage by trapping the beam entered into the aperture.

Our laser beam dumps fit for most beam sizes and can be used in a lab or any other optical system.

It is suitable for CW and pulsed beams up to 20W/cm2 (tested value).

Wide wavelength range: from EUV through VIS and up to LWIR.

The built-in mounting suits a standard optical stand (M6 x 1.0) and can be easily held. In addition to the unique design the advantage of having Acktar’s coatings implemented into the device you get the reflectivity factor of less than 10-6.

Acktar’s anti reflective coatings have been tested under a various conditions and the results presented show that Acktar Black Coatings exhibit very impressive Laser Induced Damage Threshold 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.

Click for detailed LIDT data

Max Laser beam diameter [mm]
30 / 51 / 81
Max Laser beam diameter [in]
1.1 / 2 / 3.2
Max Laser beam power density [W/cm2]
Mounting thread
M6 x 1.0 (M4 x 0.7 on request)
Wavelengths range [µm]
0.1µm - 10µm
Dimensions (exclude mount) [mm]
41.5 x 70 / 63.5 x 110 / 92 x 92 x 10
Dimensions (exclude mount) [in]
1.6 x 2.75 / 2.5 x 4.3 / 3.6 x 3.6 x 0.39
Relevant certificates
ROHS, REACH, ISO 9001:2015, AS9100

Specifications (tube dump)

Max Laser Beam Diameter [mm]
30 / 51
Reflectivity Factor
Max Laser Beam Power Density
Wavelengths range
100nm - 10um
Vacuum Black & Metal Velvet Foil
Mounting thread
M6 x 1.0
C-Mount (optional)
Unique: additional replacement ring (LBD-T-30-C1) for C-mount with max. beam diameter of 24.7mm (0.97”)
Size, exclude mount (dia. x length)
41.5mm x 70mm / 63.5mm x 110mm

Specifications (flat dump)

Max Laser Beam Diameter [mm]
Max LaserBeam Power Density
Wavelengths range
100nm - 10um
Mounting Thread
M6 x 1.0
92 mm * 92mm * 10mm

Large Order? We Can Help.

For a personal consultation with one of our experts please leave your details below and we will get back to you as soon as possible. Together we will determine your exact needs in terms of coating type, quantities, sizing and special product characteristics etc. Once all is clear we will be more than happy to submit a customized offer with excellent competitive prices.

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