Fabrication of Ge-Se-Sb chalcogenide glass with large size and its MTF performance

S. Dai; M. Li; B. Peng; J. Zhu; X. Wang; X. Shen; L. Ding; T. Xu; Q. Nie

doi:10.1117/12.835328

5 August 2009 Fabrication of Ge-Se-Sb chalcogenide glass with large size and its MTF performance

S. Dai, M. Li, B. Peng, J. Zhu, X. Wang, X. Shen, L. Ding, T. Xu, Q. Nie

Proceedings Volume 7383, International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Infrared Imaging and Applications; 738313 (2009) https://doi.org/10.1117/12.835328
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

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.

Citation Download Citation

S. Dai, M. Li, B. Peng, J. Zhu, X. Wang, X. Shen, L. Ding, T. Xu, and Q. Nie "Fabrication of Ge-Se-Sb chalcogenide glass with large size and its MTF performance", Proc. SPIE 7383, International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Infrared Imaging and Applications, 738313 (5 August 2009); https://doi.org/10.1117/12.835328

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