What is it about?
In this paper, spatial dispersion of two typical diffraction grating-based optical systems, single-grating system and grating-pair system, are thoroughly studied. The single-grating system consists of a diffraction grating to disperse the quasi-monochromatic lights and a convex lens to make the lights propagate in parallel and focused. In the grating–pair system, a pair of diffraction gratings is used to disperse the collimated lights in parallel. The spatial dispersion law for the two systems is developed and summarized. By investigating the spatial dispersion, the two systems are compared and discussed in detail.
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Why is it important?
The single-grating system consists of a diffraction grating to disperse the quasi-monochromatic lights and a convex lens to make the lights propagate in parallel and focused. In the grating–pair system, a pair of diffraction gratings is used to disperse the collimated lights in parallel.
Perspectives
The spatial dispersion law for the two systems is developed and summarized. By investigating the spatial dispersion, the two systems are compared and discussed in detail.
Mr Ali Zahid
University of Shanghai for Science and Technology
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Spatial dispersion for diffraction grating based optical systems
, January 2017, SPIE,
DOI: 10.1117/12.2263412.
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