红外宽波段双层谐衍射光学系统的设计

孙婷; 张宣智; 常伟军; 李元; 胡博; 郭小岗; 杨华梅; 陈秀萍

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红外宽波段双层谐衍射光学系统的设计

孙婷, 张宣智, 常伟军, 李元, 胡博, 郭小岗, 杨华梅, 陈秀萍

文章导航 > 红外与激光工程 > 2013 > 42(4): 951-954

孙婷, 张宣智, 常伟军, 李元, 胡博, 郭小岗, 杨华梅, 陈秀萍. 红外宽波段双层谐衍射光学系统的设计[J]. 红外与激光工程, 2013, 42(4): 951-954.

引用本文:

孙婷, 张宣智, 常伟军, 李元, 胡博, 郭小岗, 杨华梅, 陈秀萍. 红外宽波段双层谐衍射光学系统的设计[J]. 红外与激光工程, 2013, 42(4): 951-954.

Sun Ting, Zhang Xuanzhi, Chang Weijun, Li Yuan, Hu Bo, Guo Xiaogang, Yang Huamei, Chen Xiuping. Design of infrared wide waveband double-layer harmonic diffractive optical system[J]. Infrared and Laser Engineering, 2013, 42(4): 951-954.

Citation:

Sun Ting, Zhang Xuanzhi, Chang Weijun, Li Yuan, Hu Bo, Guo Xiaogang, Yang Huamei, Chen Xiuping. Design of infrared wide waveband double-layer harmonic diffractive optical system[J]. Infrared and Laser Engineering, 2013, 42(4): 951-954.

红外宽波段双层谐衍射光学系统的设计

1.
西安应用光学研究所,陕西西安 710065

基金项目:

西安应用光学研究所创新基金（Y089222-1）

详细信息

作者简介:
孙婷（1978-）女，博士，主要从事光学设计方面的研究。Email：sunting205@163.com

中图分类号: TN219

Design of infrared wide waveband double-layer harmonic diffractive optical system

1.
Xi'an Institute of Applied Optics,Xi'an 710065,China

摘要: 相比传统的折反射元件，衍射光学元件和谐衍射光学元件因其独特的色散性能和温度效应在消色差和补偿热差方面有得天独厚的优势，将其应用于混合光学系统，可以简化结构，提高像质。但是二者衍射效率均依赖于波长，降低了宽波段成像的对比度。而双层谐衍射元件可以减弱衍射效率对波长的依赖性。因此，该红外宽波段系统采用双层谐衍射元件，第一层材料为Ge，第二层材料为ZnSe，微结构厚度分别为73.3 m和149.3 m，整个工作波段的衍射效率达到97.5%以上。在Code V中仿真优化得出：混合系统的各种像差性能都比较理想，特别是宽波段8~14 m的色差得到了很好的校正，二级光谱得到较好的控制，系统的调制光学传递函数接近衍射限。最终的性能测试结果显示：各项性能均可满足使用要求。
- 红外宽波段 /
- 双层谐衍射元件 /
- 衍射效率
Abstract: Diffractive optical element(DOE) and harmonic diffractive optical element(HDOE) have overwhelming superiority on achromatisation and athermalisation over traditional refraction and reflection optical elements due to their unique dispersion and temperature effect, which may improve the performance of the optical system and simplify the system structure. But, the diffraction efficiency of both are dependent upon wavelength, that will reduce the imaging contrast in wide waveband. However, Double-layer HDOE could weak the dependence. So,they were used in this infrared wide waveband system, the materials were Ge and ZnSe respectively, the microstructure thickness of corresponding diffractive surface were 73.3 m and 149.3 m. The diffraction efficiency of the system over whole waveband was larger than 97.5%. The emulational result in Code V indicates that various aberrations in system is satisfactory. Especially, the chromatic aberration of wide waveband(8-14 m) is well corrected, secondary spectrum is controlled preferably, and MTF closes to the limit of diffraction. Finally,the measured result indicate that all performances meet optical system expectation.
- infrared wide waveband /
- double-layer harmonic diffractive optical element /
- diffraction efficiency

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红外宽波段双层谐衍射光学系统的设计

1. 西安应用光学研究所,陕西西安 710065

作者简介:
孙婷（1978-）女，博士，主要从事光学设计方面的研究。Email：sunting205@163.com

收稿日期: 2012-08-03
修回日期: 2012-09-10
刊出日期: 2013-04-25

基金项目:

西安应用光学研究所创新基金（Y089222-1）

中图分类号: TN219

关键词:

摘要: 相比传统的折反射元件，衍射光学元件和谐衍射光学元件因其独特的色散性能和温度效应在消色差和补偿热差方面有得天独厚的优势，将其应用于混合光学系统，可以简化结构，提高像质。但是二者衍射效率均依赖于波长，降低了宽波段成像的对比度。而双层谐衍射元件可以减弱衍射效率对波长的依赖性。因此，该红外宽波段系统采用双层谐衍射元件，第一层材料为Ge，第二层材料为ZnSe，微结构厚度分别为73.3 m和149.3 m，整个工作波段的衍射效率达到97.5%以上。在Code V中仿真优化得出：混合系统的各种像差性能都比较理想，特别是宽波段8~14 m的色差得到了很好的校正，二级光谱得到较好的控制，系统的调制光学传递函数接近衍射限。最终的性能测试结果显示：各项性能均可满足使用要求。

English Abstract

Design of infrared wide waveband double-layer harmonic diffractive optical system

1. Xi'an Institute of Applied Optics,Xi'an 710065,China

Received Date: 2012-08-03
Rev Recd Date: 2012-09-10
Publish Date: 2013-04-25

Keywords:

infrared wide waveband /
double-layer harmonic diffractive optical element /
diffraction efficiency

Abstract: Diffractive optical element(DOE) and harmonic diffractive optical element(HDOE) have overwhelming superiority on achromatisation and athermalisation over traditional refraction and reflection optical elements due to their unique dispersion and temperature effect, which may improve the performance of the optical system and simplify the system structure. But, the diffraction efficiency of both are dependent upon wavelength, that will reduce the imaging contrast in wide waveband. However, Double-layer HDOE could weak the dependence. So,they were used in this infrared wide waveband system, the materials were Ge and ZnSe respectively, the microstructure thickness of corresponding diffractive surface were 73.3 m and 149.3 m. The diffraction efficiency of the system over whole waveband was larger than 97.5%. The emulational result in Code V indicates that various aberrations in system is satisfactory. Especially, the chromatic aberration of wide waveband(8-14 m) is well corrected, secondary spectrum is controlled preferably, and MTF closes to the limit of diffraction. Finally,the measured result indicate that all performances meet optical system expectation.