Implementations disclosed describe a system comprising a first optical device to receive an input beam of light, the input beam having a plurality of spectral components of light, and cause the input beam to disperse into a plurality of spectral beams, wherein each of the plurality of spectral beams corresponds to one of the plurality of spectral components and propagates along a spatial path that is different from spatial paths of other spectral beams, and a second optical device to collect a portion of each of the spectral beams, wherein the collected portion depends on the spatial path of the respective spectral beam, and form an output beam of light from the collected portion of each of the spectral beams, wherein a spectral profile of the output beam is different from a spectral profile of the input beam of light.