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Proceedings Paper

Fabrication of Ge-Se-Sb chalcogenide glass with large size and its MTF performance
Author(s): S. Dai; M. Li; B. Peng; J. Zhu; X. Wang; X. Shen; L. Ding; T. Xu; Q. Nie
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Paper Abstract

In this paper, the methods of preparation of Ge-Se-Sb glasses with low impurity content were developed, and a large Ge-Sb-Se glass rod (φ85×80mm) with good quality was obtained. The physical and optical properties of the glass were measured. The optical homogeneity (Δn) at 2μm at different places inside the same bulk was less ±2×10-4. In order to accurately evaluate the infrared resolution of our prepared glass, a lens of f 19mm F/#1.3 was used to evalue its modulation transfer function (MTF) performance. The MTF value at 20cycles/mm for 20°C was 0.52. The area under MTF curve covers 82.466% of the image space, and has a value of 21.8 cycles/mm.

Paper Details

Date Published: 5 August 2009
PDF: 5 pages
Proc. SPIE 7383, International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Infrared Imaging and Applications, 738313 (5 August 2009); doi: 10.1117/12.835328
Show Author Affiliations
S. Dai, Ningbo Univ. (China)
Xi'an Institute of Optics and Precision Mechanics (China)
M. Li, Kunming IR-Optics Technology Co. Ltd. (China)
B. Peng, Xi'an Institute of Optics and Precision Mechanics (China)
J. Zhu, Ningbo Univ. (China)
X. Wang, Ningbo Univ. (China)
X. Shen, Ningbo Univ. (China)
L. Ding, Kunming IR-Optics Technology Co. Ltd. (China)
T. Xu, Ningbo Univ. (China)
Q. Nie, Ningbo Univ. (China)


Published in SPIE Proceedings Vol. 7383:
International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Infrared Imaging and Applications
Jeffery Puschell; Hai-mei Gong; Yi Cai; Jin Lu; Jin-dong Fei, Editor(s)

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