Share Email Print
cover

Proceedings Paper

Astigmatism analysis by matrix methods in white cells
Author(s): Kexin Chen; Huaidong Yang; Liqun Sun; Guofan Jin
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper 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.

Paper Details

Date Published: 27 January 2009
PDF: 8 pages
Proc. SPIE 7156, 2008 International Conference on Optical Instruments and Technology: Optical Systems and Optoelectronic Instruments, 71560G (27 January 2009); doi: 10.1117/12.806947
Show Author Affiliations
Kexin Chen, Tsinghua Univ. (China)
Huaidong Yang, Tsinghua Univ. (China)
Liqun Sun, Tsinghua Univ. (China)
Guofan Jin, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 7156:
2008 International Conference on Optical Instruments and Technology: Optical Systems and Optoelectronic Instruments

© SPIE. Terms of Use
Back to Top