+Advanced Search
Home > Archive>Volume 34, Issue 5, 2015 >533-537. DOI:10.11972/j.issn.1001-9014.2015.05.004
PDF HTML XML Export Cite reminder
Design of a novel low-background spectrometer for infrared sensitive detection
CSTR:
[cstr]
Author:
Affiliation:

Department of Physics and Astronomy,Key Laboratory of Artificial Structures and Quantum Control,Shanghai Jiao Tong University,Department of Physics and Astronomy,Key Laboratory of Artificial Structures and Quantum Control,Shanghai Jiao Tong University,Department of Physics and Astronomy,Key Laboratory of Artificial Structures and Quantum Control,Shanghai Jiao Tong University,Department of Physics and Astronomy,Key Laboratory of Artificial Structures and Quantum Control,Shanghai Jiao Tong University,Department of Physics and Astronomy,Key Laboratory of Artificial Structures and Quantum Control,Shanghai Jiao Tong University

  • Article
    • | |
  • Metrics
    • |
  • Reference
    • |
  • Related
    • |
  • Cited by
    • | |
  • Comments
    Abstract:

    The design of a novel low-background spectrometer based on lamellar grating interferometer (LGI) is presented. Reducing background noise helps to improve the spectrometer system detectivity for detectors operating under background limited performance (BLIP) regime, and then improve the signal to noise ratio (SNR) of spectrometer. The principle is that perfect mirrors do not emit blackbody radiation since their emissivity equals zero. Therefore, a lamellar grating interferometer based on a “cold” source and a “cold” detector becomes an extremely sensitive instrument because of the reduction of background radiation. Theoretical analysis shows that the system detectivity can be improved substantially with background radiation dropping. In ideal case, for a typical HgCdTe detector, the real BLIP detectivity obtained and corresponding SNR can be improved by three orders of magnitudes when background radiation is reduced from 300 K to 77 K. Besides, without cooling the interferometer, this configuration is more compact and easier-to-build compared with previously reported low-background Michelson spectrometer. This design has important significance for infrared sensitive detection.

    Reference
    Related
    Cited by
Get Citation

GAO Ji-Hong, JIA Jing-Yue, HAO Ming-Rui, SHEN Wen-Zhong, ZHANG Yue-Heng. Design of a novel low-background spectrometer for infrared sensitive detection[J]. Journal of Infrared and Millimeter Waves,2015,34(5):533~537

Copy
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:July 10,2014
  • Revised:September 30,2014
  • Adopted:September 30,2014
  • Online: November 30,2015
Article QR Code
You are the first Visitors
Governing Body：中国科学院
Organizer：中国科学院上海技术物理研究所，中国光学学会
Address：上海市玉田路500号 Phone：021-25051553
51La
Journal of Infrared and Millimeter Waves ® 2025 All Rights Reserved