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Watt Pilot – Motorized Attenuator, Standard version

Watt Pilot – Motorized Attenuator, Standard version

Clear aperture

12 mm

Recommended maximum input beam diameter at 1/e2

8 mm


Up to ±10 nm


λ/2 ZO waveplate + High Energy Polarizing Beamsplitter cube

Attenuation range (Tmin-Tmax) @ CWL

Up to 0.5 – 95%

Typical applications

Medium and high power CW and pulsed lasers, LDs

Damage threshold

>20 J/cm² @ 1064 nm, 10 ns, 10 Hz

Dimensions (L x W x H)

70 x 91 x 63 mm

Time between min and max attenuation

<3 sec

Steps between min and max attenuation



<42 arcsec/step

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The Standard Watt Pilot incorporates a motor-driven rotating quartz λ/2 phase waveplate and High Energy Polarizing Beamsplitter Cube that separates s-polarized and p-polarized beams in orthogonal directions. Pure p-polarization should be selected for maximum transmission and pure s-polarization for maximum attenuation. The intensity ratio of these two beams is continuously tuned by rotating the waveplate.

The Watt Pilot is essential in systems in which stable adjustments to laser power are necessary. Despite the stand-alone device look, the motorized attenuator is compact and can be easily integrated into custom optical systems.

A detachable beam dump is complementary with the product. Custom wavelengths are available upon request.



  • Fast open-close time
  • Available in high power and medium power versions
  • Convenient 90° angle between reflected s-pol and transmitted p-pol beams
  • Negligible beam deviation
  • Interchangeable optics
  • PC Control software included
  • User-friendly software interface

Contact us and we will find a solution for your beam attenuation, power control, beam splitting needs. We can also recommend compatible optical components for your beam delivery applications.

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