High Power Variable Attenuator, 1550nm Standard Watt pilot

Manufacturer's part number :


Manufacturer Altechna


Description :

High power 1550nm Watt Pilot is continuously variable attenuators based on polarization control of linearly polarized laser beams. High power 1550nm Watt Pilot consists of 2 high-performance polarizing optics components placed in precision opto-mechanical holder 5APH79T-1. Variable attenuator/beamsplitter incorporates a high-performance polarizing cube beamsplitter which reflects s-polarized light 90 while transmitting p-polarized light. A rotating quartz Phase λ/2 Waveplate is placed in the incident polarized laser beam. The intensity ratio of those two beams may be continuously varied without alteration of other beam parameters by rotating the waveplate. Ratio can be controlled over a wide dynamic range. Pure p-polarization could be selected for maximum transmission, or pure s-polarization for maximum attenuation of the transmitted beam.

Each Watt Pilot variable attenuator device is supplied in two different versions, manual or motorized. The intensity of the laser beam can be controlled over a wide dynamic range by rotating the waveplate. This can be done by hand in manual Watt Pilot devices or via special software in motorized Watt Pilot devices.

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  • Wavelength at 1550nm
  • Attenuation range: 0.5 - 95 %
  • Extinction ratio: Ts/Tp< 1:500
  • High power: λ/2 Zero order waveplate with optically contacted polarizing cube
  • Clear aperture: 10 mm (up to 50 mm available)
  • Damage thershold: >20 J/cm² 10 ns 10 Hz @1064nm
  • Benefits

  • Divides laser beam into two beams of manually adjustable intensity ratio
  • Convenient 90deg angle between reflected and transmitted beams
  • Large dynamic range
  • Broadband transmission
  • Negligible beam deviation
  • Low dispersion for femtosecond laser pulses
Features Similar products
Type Variable attenuator  

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Spectral Range NIR (700nm-3µm)  
Coatings Dielectrics