Polarization is a fundamental property of light. Although wide-band, incoherent light sources are usually unpolarized, lasers usually have a certain polarization. In many applications, this polarization influences measurement results, which makes it necessary to measure, change, or stabilize the polarization.
PolaStay™ polarization stabilizers actively maintain a stable output state of polarization (SOP) against rapid input SOP fluctuations, compensating for an input polarization discontinuity in as fast as 5 ms, or tracking without resets against a continuous input SOP rotation of up to 32π/s