Achromatized Holographic Phase Shifter and Modulator

摘要

Novel achromatic optical systems forming phase shifters and phase modulators are presented and shown to produce phase-angle shifts in incoming waves which are independent of wavelength over broad spectral ranges. Three achromatic phase shifters are described including the triangular, close cascade, and imaged grating configurations. Applications are discussed and experimental results are given in support of the theory. Keywords: Phase shifter, Phase modulator, Frequency modulation, Holography, White light, Phase conjugation, Achromatic, Doppler, Reprints. (JHD)