Echelle gratings acting as one

被引:6
|
作者
Lindblom, P [1 ]
机构
[1] Multichannel Instruments AB, S-12832 Stockholm, Sweden
关键词
D O I
10.1364/AO.42.004549
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A new device for producing order-sortable echelle spectra by use of consecutive diffractions in several echelle grating surfaces is described. This echelle emulating device (EED) comprises a prism placed in the path between a pair of echelle grating surfaces. The refractive angle of the prism is fixed through a simple relation. The device reproduces all the main properties of a single virtual echelle, obtained from a simple grating equation describing the combined action of the gratings and the prism. The spectral order of the EED is the sum of the spectral orders of the individual gratings. A spectrograph that utilizes the device is described, and several applications are discussed. (C) 2003 Optical Society of America.
引用
收藏
页码:4549 / 4559
页数:11
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