Broadband beam steering using chalcogenide-based Risley prisms

被引：32

作者：

Florea, Catalin ^{[1
]}

Sanghera, Jasbinder ^{[2
]}

Aggarwal, Ishwar ^{[2
]}

机构：

[1] GTEC Inc, Crofton, MD 21114 USA

[2] USN, Res Lab, Washington, DC 20375 USA

来源：

OPTICAL ENGINEERING | 2011年 / 50卷 / 03期

关键词：

infrared beam steering; infrared countermeasures; Risley prism; chalcogenide glass; chromatic dispersion correction; thermal walk-off;

D O I：

10.1117/1.3551503

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, we propose using chalcogenide glasses for improved, large-angle, beam steering of infrared radiation, with minimal spectral dispersion and improved thermal performance over wavelength intervals covering the 2 to 12-mu m range. For example, we evaluate that full-angle dispersion in the 2 to 5 mu m region for LiF/As(2)S(3) combination should be three times smaller than in the case of LiF/ZnS combination. We also evaluate that using the ZnSe/As(2)Se(3) combination will provide twice as small thermal walk-off than a similar ZnS/Ge system in the 8 to 12-mu m region. (C) 2011 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.3551503]

引用

页数：5

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