Radiation producing method for lithography device, involves filtering initial radiation using mirror to selectively deviate rays whose wavelengths are out of desired range and to recover rays with desired wavelengths

摘要

The method involves producing an initial radiation with desired wavelength in the range of 0-100 nanometer, by a radiation source (211). The initial radiation is filtered by controlling distribution of refractive index of rays of the initial radiation in a control region (212), using a multilayer mirror, to selectively deviate the rays whose wavelengths are out of the desired range and to recover the rays with desired wavelengths. An independent claim is also included for a lithography device having an apparatus for generating a radiation in a transmission direction.