太赫兹大孔径折射透镜的焦移特性研究
作者:
作者单位:

1.中国科学院光电信息处理重点实验室,辽宁 沈阳 110169;2.辽宁省太赫兹成像感知重点实验室,辽宁 沈阳 110169;3.中国科学院沈阳自动化研究所,辽宁 沈阳 110169

中图分类号:

O43


Focal shift effect of terahertz wide-aperture refractive lens
Author:
  • LI Wei-Fan 1,2,3

    LI Wei-Fan

    Key Laboratory of Opto-Electronic Information Processing, Chinese Academy of Sciences,Shenyang 110169, China;Key Laboratory in Terahertz Imaging and Sensing, Liaoning Province, Shenyang 110169, China;Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110169, China
    在期刊界中查找
    在百度中查找
    在本站中查找
  • QI Feng 1,2,3

    QI Feng

    Key Laboratory of Opto-Electronic Information Processing, Chinese Academy of Sciences,Shenyang 110169, China;Key Laboratory in Terahertz Imaging and Sensing, Liaoning Province, Shenyang 110169, China;Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110169, China
    在期刊界中查找
    在百度中查找
    在本站中查找
  • WANG Ye-Long 1,2,3

    WANG Ye-Long

    Key Laboratory of Opto-Electronic Information Processing, Chinese Academy of Sciences,Shenyang 110169, China;Key Laboratory in Terahertz Imaging and Sensing, Liaoning Province, Shenyang 110169, China;Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110169, China
    在期刊界中查找
    在百度中查找
    在本站中查找
  • LIU Peng-Xiang 1,2,3

    LIU Peng-Xiang

    Key Laboratory of Opto-Electronic Information Processing, Chinese Academy of Sciences,Shenyang 110169, China;Key Laboratory in Terahertz Imaging and Sensing, Liaoning Province, Shenyang 110169, China;Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110169, China
    在期刊界中查找
    在百度中查找
    在本站中查找
  • LIU Zhao-Yang 1,2,3

    LIU Zhao-Yang

    Key Laboratory of Opto-Electronic Information Processing, Chinese Academy of Sciences,Shenyang 110169, China;Key Laboratory in Terahertz Imaging and Sensing, Liaoning Province, Shenyang 110169, China;Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110169, China
    在期刊界中查找
    在百度中查找
    在本站中查找
Affiliation:

1.Key Laboratory of Opto-Electronic Information Processing, Chinese Academy of Sciences,Shenyang 110169, China;2.Key Laboratory in Terahertz Imaging and Sensing, Liaoning Province, Shenyang 110169, China;3.Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110169, China

Fund Project:

Supported by Science, Technology & Innovation Project of Xiongan New Area (2022XAGG0181), Shenyang Young and Middle-aged Science and Technology Innovation Talent Support Program (RC220523).

  • 摘要
  • | |
  • 访问统计
  • |
  • 参考文献 [10]
  • |
  • 相似文献 [20]
  • | | |
  • 文章评论
    摘要:

    研究了利用大孔径折射透镜对太赫兹波进行聚焦时产生的焦移效应。焦移效应所引起的焦点位置偏差会对太赫兹系统的成像或测量质量产生不利影响。通过理论计算和有限元分析仿真,研究并讨论了与透镜孔径、焦距和工作频率有关的焦移参考值。当使用商用透镜时,实际焦点位置需要通过焦移效应来确定,以保证太赫兹系统的工作效率。对于定制透镜的设计,焦移需要根据工作频率,在焦距的设计中进行补偿。这两个途径可以保障太赫兹系统的良好性能。

    Abstract:

    The focal shift effect of terahertz (THz) beam focusing when using a wide-aperture refractive lens has been investigated. The deviation of focus position caused by the focal shift effect can adversely affect the imaging or measurement quality of a THz system. In this study, reference values of relative focal shifts and combinations of different lens apertures, focal lengths, and working frequencies were analyzed and discussed through theoretical calculation and finite element analysis simulation. When using the commercial lens, the actual focus was determined based on the focal shift effect to ensure the working efficiency of a terahertz system. Concerning the customized lens design, the focal shift distance was compensated in the focal length optimization according to the working frequency. These two approaches guaranteed the good performance of a THz system.

    参考文献
    [1] Mittleman D M. Twenty years of terahertz imaging [Invited][J]. Optics Express, 2018, 26(8):9417–9431. 10.1364/oe.26.009417
    [2] Neu J, Schmuttenmaer C A. Tutorial: An introduction to terahertz time domain spectroscopy (THz-TDS)[J]. Journal of Applied Physics, 2018, 124(23):231101. 10.1063/1.5047659
    [3] Ferguson B, Zhang X C. Materials for terahertz science and technology[J]. Nature Materials, 2002, 1(1):26–33. 10.1038/nmat708
    [4] Liu Z, Qi F, Wang Y, et al. A 220- to 299-GHz CMOS terahertz detector[J]. Journal of Infrared Millimeter and Terahertz Waves, 2019, 40(6):606–619. 10.1007/s10762-019-00592-2
    [5] Lo Y H, Leonhardt R. Aspheric lenses for terahertz imaging[J]. Optics Express, 2008, 16(20):15991–15998. 10.1364/oe.16.015991
    [6] Li W, Qi F, Wang Y, et al. Refractive aspherical lens for terahertz imaging[J]. Optics Communications, 2018, 433:14-17. 10.1016/j.optcom.2018.09.071
    [7] Li Y. Focal shift formula for focused, apertured Gaussian beams[J]. Journal of Modern Optics, 1992, 39(8): 1761–1764. 10.1080/713823585
    [8] Li Y, Wolf E. Focal shifts in diffracted converging spherical waves[J]. Optics Communications, 1981, 39(4):211-215. 10.1016/0030-4018(81)90108-5
    [9] Ferlet M. Imaging at low Fresnel number: some challenges and applications[J]. Proceedings of SPIE - The International Society for Optical Engineering, 2006, 6289. 10.1117/12.680509
    [10] Born M, Wolf E. Principles of optics: electromagnetic theory of propagation, interference and diffraction of light, seventh edition[M]. Cambridge: Cambridge University Press, 1999.杨葭荪译, 光学原理:光的传播、干涉和衍射的电磁理论, 第7版, 北京, 电子工业出版社, 2016.
    引证文献
    网友评论
    网友评论
    分享到微博
    发 布
引用本文

李惟帆,祁峰,汪业龙,刘鹏翔,刘朝阳.太赫兹大孔径折射透镜的焦移特性研究[J].红外与毫米波学报,2023,42(3):345~349]. LI Wei-Fan, QI Feng, WANG Ye-Long, LIU Peng-Xiang, LIU Zhao-Yang. Focal shift effect of terahertz wide-aperture refractive lens[J]. J. Infrared Millim. Waves,2023,42(3):345~349.]

复制
分享
文章指标
  • 点击次数:252
  • 下载次数: 1434
  • HTML阅读次数: 125
  • 引用次数: 0
历史
  • 收稿日期:2022-10-12
  • 最后修改日期:2023-03-31
  • 录用日期:2022-12-06
  • 在线发布日期: 2023-03-30
文章二维码