High Resolution Polarization Controller-USB/RS232

SKU: POLU

The POLV provides precise polarization control, adaptable for both fiber-coupled and free-space applications across a wide range of operating wavelengths and high optical powers. Configured with three step-motor-driven rotatable waveplates, it converts incoming light with any polarization state into a specific polarization state on the Poincaré sphere, achieving all possible polarization states with high precision and repeatability. With a single or dual rotator configuration using polarizer plates, polarizer prisms, or polarization beam splitters, the POLV functions as a polarizer with sub-degree directional resolution. A high-precision driver with a built-in encoder allows adjustments with accuracy better than 0.03 degrees, managed through an intuitive GUI accessible via USB or RS232. This plug-and-play unit includes a wall-pluggable DC power supply. High-power optics and connectorized fibers are available, and the software and GUI can be customized upon request, with a Python command list also available.
For full-range polarization control on the Poincaré sphere, a typical setup involves placing a λ/2 plate, λ/4 plate, and another λ/2 plate in series. Each plate’s orientation determines the polarization transformation: First Half-Wave Plate: Rotates the initial polarization angle. Quarter-Wave Plate: Converts linearly polarized light into elliptical or circular polarization. Second Half-Wave Plate: Further rotates the polarization angle to achieve the desired output state.