abstract:A polychromator is an optical device that is used to disperse light into different directions to isolate parts of the spectrum of the light. A prism or diffraction grating can be used to disperse the light.
In this paper, the flatfieldpolychromator (SPD - I) usinganaberration- corrected flat fie1d holographicconcavediffractiongratingas both spectroscopicandoPticalimagingelement is re-POrted.