POLARIZATION CONTROL SYSTEMS

摘要

Polarization rotation controls that can be incorporated in structured illumination microscopy instruments to rotate an interference fringe pattern through a desired angle of rotation and rotate the polarization through substantially the same rotation angle are described. In one aspect, a polarization rotation control includes at least one polarization rotator and a splitter. A beam of polarized coherent light is transmitted through one of the at least one polarization rotator and the splitter. The splitter splits the beam into at least three coherent beams of light that are focus by an objective lens of the microscopy instrument to form an interference fringe pattern, and the splitter is rotated to rotate the interference pattern through a desired rotation angle. The at least one polarization rotator rotates the polarization of the light through substantially the same rotation angle.