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Proceedings Paper

Fabrication of the convex blazed grating
Author(s): Quan Liu; Haibin Wang; Peng Sun; Jianhong Wu
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Paper Abstract

The convex grating is one of the key elements in hyperspectral imaging spectrometers. In this paper the diffraction characteristics of the convex blazed grating is investigated by using rigorous coupled-wave theory, which indicates that within the wavelength from 0.4μm to 0.8μm, the plus first-order diffraction efficiency can be over 35% through controlling the blaze angle of blazed grating. The convex blazed grating with the period of 5μm in the center, the blaze angle about 4.3 degree, and the ruled area - a convex substrate with its radius 72mm and aperture 35mm has been fabricated by holographic- scan ion beam etching. Experimental measurements show that the plus first-order diffraction efficiency is more than 35%, within the wavelength from 0.4μm to 0.8μm.

Paper Details

Date Published: 17 November 2010
PDF: 7 pages
Proc. SPIE 7848, Holography, Diffractive Optics, and Applications IV, 78480V (17 November 2010); doi: 10.1117/12.870125
Show Author Affiliations
Quan Liu, Soochow Univ. (China)
Haibin Wang, Soochow Univ. (China)
Peng Sun, Soochow Univ. (China)
Jianhong Wu, Soochow Univ. (China)


Published in SPIE Proceedings Vol. 7848:
Holography, Diffractive Optics, and Applications IV
Yunlong Sheng; Chongxiu Yu; Linsen Chen, Editor(s)

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