Laser Attenuators

A laser attenuator is a device that is used to reduce the power or intensity of a laser beam. The primary use of a laser attenuator is to prevent damage to optical components or human eyes that can occur due to exposure to a high-powered laser beam.

Customization is available for this product. Let us know your specifications in the RFQ form.

Part No.Wavelength (nm)Clear Aperture (mm)Attenuation RangeOptimizationDimensions (mm)
ATTN-3553552.0-10.05% – 95%Transmission88 x 93.5 x 79
ATTN-5325322.0-10.05% – 95%Transmission88 x 93.5 x 79
ATTN-106410642.0-10.05% – 95%Transmission88 x 93.5 x 79
ATTN-940094002.0-10.05% – 95%Transmission80x 84 x 95
ATTN-10600106002.0-10.05% – 95%Transmission80 x 84 x 95
ATTP-35535514.00.5% – 95%Transmission78 x 87 x 75
ATTP-53253214.00.5% – 95%Transmission78 x 87 x 75
ATTP-1064106414.00.5% – 95%Transmission78 x 87 x 75

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Attenuators are used in laser micromachining to control the intensity of the laser beam that is used to cut or ablate material.

The intensity of the laser beam is important because it determines the amount of energy that is delivered to the material being processed. If the intensity is too high, it can cause damage to the material or create unwanted side effects such as thermal stress, melting, or vaporization. On the other hand, if the intensity is too low, it may not be sufficient to achieve the desired material removal rate or precision.

Attenuators work by reducing the power of the laser beam without altering its spatial profile or beam quality. This allows the user to precisely adjust the energy delivered to the material being processed, which in turn can improve the quality and precision of the micromachining process.

Attenuators can be either passive or active. Passive attenuators use filters, glass planes, or polarizers to absorb or reflect some of the laser light, while active attenuators use devices such as electro-optic modulators or acousto-optic modulators to vary the laser power in real-time. The choice of attenuator depends on the specific requirements of the micromachining process, including the laser wavelength, power, pulse duration, and repetition rate.

Laser Attenuator (Polarization Insensitive)

The laser attenuator is especially useful for laser sources with fixed output powers. There are both fixed and variable laser attenuators depending on the intended attenuation required. Variable attenuators are readily available with either manual adjustment or motorized adjustment. The laser attenuator in no way affects the direction of the beam propagation after attenuation.

Item No.: ATTN-10600-WC-V1
Wavelength: 10.6μm
Clear Aperture: Up to 19mm (Customizable)
Transmission Range: 10 – 90%
Damage Threshold: 1MW/cm^2
Resolution: 5%

Polarizing Laser Attenuator

Precision laser applications require fine power control. A variable attenuator with a large dynamic range and precision control is designed to fulfill this purpose. It is suitable for intensity attenuation over a wavelength range from UV to IR.

Wavelength: 355/532/1064nm
Type: Transmission Mode
Clear Aperture: 14mm
Beam Shift: 0.5mm
Extinction Ratio: >200:1
Attenuation Range: 0.5%-95%
Damage Threshold: >5J/cm2@1064nm, 20ns, 20Hz
Weight: <300g 

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