Investigation of size-of-source effect of Fourier-transform infrared radiation measurement facility with infrared optical system using direct method

Xu-yao Song; Wei Dong; Zun-dong Yuan; Zhi-bin Li; Xiao-feng Lu; Yan Qu

doi:10.1117/12.2579443

5 November 2020 Investigation of size-of-source effect of Fourier-transform infrared radiation measurement facility with infrared optical system using direct method

Xu-yao Song, Wei Dong, Zun-dong Yuan, Zhi-bin Li, Xiao-feng Lu, Yan Qu

Author Affiliations +

Proceedings Volume 11566, AOPC 2020: Optical Spectroscopy and Imaging; and Biomedical Optics; 115660G (2020) https://doi.org/10.1117/12.2579443
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China

Abstract

Low size-of-source effect (SSE) infrared optical system design and experimental validation are critically involved. SSE is commonly explored in infrared radiation measurements. The main causes of SSE are the diffraction of the field aperture, the reflection of optical components and objective aberrations. The optical path design and the internal components scattering have an important influence on SSE. Reflective optical system is commonly used in infrared radiation measurements with high temperature region and wide wavelength range, which can eliminate chromatic aberration and reduce coma. A reflective infrared optical system is designed and built based on the high-temperature Fourier transform infrared (FTIR) spectrometer infrared radiation measurement facility at NIM. The ambient scattered radiation and the thermal effect of optical components are controlled via the water-cooled scattered radiation shielding bin and limitation apertures. Experimental validation of the SSE characteristics of the FTIR infrared optical system is carried out via the uniform blackbody radiation source at 500 °C and various sized apertures using the direct measurement method. The corresponding calculation model will be described in the paper. SSE on 3.9 μm is measured via the direct measurement method by using a standard reference blackbody with good temperature uniformity as the radiation source. The effect of reflection is reduced via the high emissivity coating on the apertures. The results show that the effect of the SSE on the FTIR measurement facility at the wavelength of 3.9 μm is less than 2×10^-4. Details and results of the infrared optical system SSE measurement will be reported in the paper. All measurements can be traceable to the National Standards of P. R. China.

Citation Download Citation

Xu-yao Song, Wei Dong, Zun-dong Yuan, Zhi-bin Li, Xiao-feng Lu, and Yan Qu "Investigation of size-of-source effect of Fourier-transform infrared radiation measurement facility with infrared optical system using direct method", Proc. SPIE 11566, AOPC 2020: Optical Spectroscopy and Imaging; and Biomedical Optics, 115660G (5 November 2020); https://doi.org/10.1117/12.2579443

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

FT-IR spectroscopy

Black bodies

Infrared radiation

Direct methods

Infrared imaging

Radiation effects

Infrared spectroscopy

Show All Keywords

Keywords/Phrases

Search In:

Publication Years