Motorized Watt Pilot - Attenuator

Motorized Continuously Variable Attenuator with Brewster type thin film polarizers/polarizing beamsplitter cube.

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Motorized Continuously Variable Attenuator for High Power applications is the Altechna Co. Ltd. automated laser power attenuation solution. This device is controled from PC via USB interface. Motorized attenuator can be used as stand-alone device as well as integrated in your custom design system. The variable attenuator/beamsplitter incorporates 2 high-performance Brewster type polarizers, which reflect s-polarized light while transmitting p-polarized light. These two Brewster type polarizers are housed in special design opto-mechanical Adapter. A rotating Phase retardation of 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. The intensity of either exit beam, or their intensity ratio, can be controlled over a wide dynamic range. P-polarization could be selected for maximum transmission, or high-purity s-polarization could be reflected when maximum attenuation of the transmitted beam takes place.

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Attenuator, lasers, Continuously, variable, research, sciense, Beam, photonic, Technology