Astigmatism analysis by matrix methods in white cells

Kexin Chen; Huaidong Yang; Liqun Sun; Guofan Jin

doi:10.1117/12.806947

26 January 2009 Astigmatism analysis by matrix methods in white cells

Kexin Chen, Huaidong Yang, Liqun Sun, Guofan Jin

Proceedings Volume 7156, 2008 International Conference on Optical Instruments and Technology: Optical Systems and Optoelectronic Instruments; 71560G (2009) https://doi.org/10.1117/12.806947
Event: International Conference of Optical Instrument and Technology, 2008, Beijing, China

Abstract

White Cell is a typical multiple-path absorption cell for absorption spectroscopy. For multi-path enhanced absorption application, we should make sure that the input light of the multiple-path cell can be output as much as possible to enhance absorption signal. Thus the astigmatism of the White cell should be analyzed for optimization as a key factor. In White cell, the astigmatism is difficult to be calculated as the meridian and sagittal planes of the beam would rotate with a different angle while at each reflection. In this article, the White cell is presented by defined 4×4 optical matrices as a nonsymmetrical system. The astigmatic difference would then be obtained from the eigenvalues of the partitioned matrices. The numerical computation and ray-tracing simulation results presented have proved the efficiency of this method. The astigmatism can be improved by properly choosing the distance h between the two rows of image spots on the field mirror.

Citation Download Citation

Kexin Chen, Huaidong Yang, Liqun Sun, and Guofan Jin "Astigmatism analysis by matrix methods in white cells", Proc. SPIE 7156, 2008 International Conference on Optical Instruments and Technology: Optical Systems and Optoelectronic Instruments, 71560G (26 January 2009); https://doi.org/10.1117/12.806947

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