title: Miniature anastigmatic spectrometer design with a concave toroidal mirror.
abstract: An advanced optical design for a low-cost and astigmatism-corrected spectrometer with a high resolution is presented. The theory and method of astigmatism correction are determined with the use of a concave toroidal mirror. The performances of a modified spectrometer and a traditional spectrometer are compared, and the analysis is verified. Experimentally, the limiting resolution of our spectrometer is 0.1 nm full width at half-maximum, as measured for 579.1 nm.
authors.forename: Jianing
authors.initials: J
authors.lastname: Dong
authors.forename: He
authors.initials: H
authors.lastname: Chen
authors.forename: Yinchao
authors.initials: Y
authors.lastname: Zhang
authors.forename: Siying
authors.initials: S
authors.lastname: Chen
authors.forename: Pan
authors.initials: P
authors.lastname: Guo