WAVELENGTH TUNABLE CIRCULAR POLARIZATION DEVICE, NOTCH FILTER, BANDPASS FILTER, AND LASER USING THE SAME

摘要

The present invention relates to a circular polarizer array and a circular polarizer in which the central wavelength of an optical band is continuously variable in the lateral direction (that is, in the x-axis direction) by forming an electric field intensity gradient in a cell injected with cholesteric liquid crystal. It relates to a bandpass filter array, a notch filter array and a laser array made by combining them.