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Groove shape characteristics of echelle gratings with high diffraction efficiency
Zhang, S. W.; X. T. Mi; Q. Zhang; Jirigalantu; S. L. Feng; H. L. Yu and X. D. Qi
2017
Source PublicationOptics Communications
Volume387
AbstractThe groove shape characteristics of echelle gratings with high diffraction efficiency are investigated. Using the coordinate transformation method (C method), an r-2 aluminum echelle with 79 grooves/mm is optimized through rigorous numerical simulations and shows high diffraction efficiency of 76-81% in the high Littrow orders. A grating is found to be essentially an echelle if it contains a series of reflective facets with a specific tilt angle that are located far from the nonworking facet of the grating and have a deep groove depth; any groove shape that meets these conditions can be called an echelle grating. The underlying mechanism is analyzed phenomenologically using electromagnetic theory. The universal model proposed here, which represents a new cognitive understanding of the concept of the echelle, is ready for use in manufacturing applications and offers a new perspective for the fabrication of these gratings.
Indexed Bysci ; ei
Language英语
Document Type期刊论文
Identifierhttp://ir.ciomp.ac.cn/handle/181722/59450
Collection中科院长春光机所知识产出
Recommended Citation
GB/T 7714
Zhang, S. W.,X. T. Mi,Q. Zhang,et al. Groove shape characteristics of echelle gratings with high diffraction efficiency[J]. Optics Communications,2017,387.
APA Zhang, S. W.,X. T. Mi,Q. Zhang,Jirigalantu,S. L. Feng,&H. L. Yu and X. D. Qi.(2017).Groove shape characteristics of echelle gratings with high diffraction efficiency.Optics Communications,387.
MLA Zhang, S. W.,et al."Groove shape characteristics of echelle gratings with high diffraction efficiency".Optics Communications 387(2017).
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