Reconstruction design method of an aspherical recording optical system for the varied line-space grating

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Abstract
A reconstruction design method for an aspherical recording system for varied line-space gratings is introduced. This method converts the recording system design from achieving specific groove distribution coefficients within the expansion model into reconstruction of the auxiliary mirror surface via the ray-tracing method. The effects of higher-order expansion terms in the expansion model are investigated and more accurate design of the varied line-space grating recording structure is achieved. By varying the surface reconstruction target, this method can be used to design aspherical recording structures with any auxiliary mirror surface shapes.
Funding Information
  • National Key Research and Development Program of China (2020YFA0714500)
  • Scientific Instruments and Equipments Development Project of the Chinese Academy of Science (YJKYYQ20200003)
  • National Natural Science Foundation of China (12105288, 61905244)
  • The Program for the Development of Science and Technology Jilin Province (20200801055GH)

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