To our knowledge, we demonstrate a new scheme for passband engineering of a grating spectrometer. Through spatial masking of the input beam and translation of the optical components we present shaping, shifting, and scaling of the passband in optical frequency. Specifically, we demonstrate the relationship between the applied spatial masking function and the spectrometer passband may be tuned from an exact Fourier transform to a direct scaling through longitudinal displacement of the spectrometer lens and sampling slit and that this operation is independent of the choice of spectrometer center frequency.
©2004 Optical Society of America
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