Imaging characteristics of 90-deg geometry volume holographic imaging system

Author

Wenmei Shen ; Zhuqing Jiang ; Yuting Wang ; Lihong Ma

Author_Institution

Urban Constr. Dept., Hebei Univ. of Archit. & Eng., Zhangjiakou, China

Volume

7

fYear

2011

fDate

12-14 Aug. 2011

Firstpage

3735

Lastpage

3738

Abstract

Diffraction imaging characteristics of a 90-deg geometry volume holographic imaging system is investigated in this paper. A volume holographic grating, used as a volume holographic imaging lens in the imaging system, is recorded via illuminating the recording medium with a spherical signal beam and a plane reference beam. According to Bragg selectivity of a volume holographic grating, the Bragg mismatch of diffraction imaging in the different position can cause the significant decrease of diffraction efficiency. The point spread function (PSF) of the volume holographic imaging system is employed to analyze diffraction imaging characteristics and to estimate the depth resolution. The results show that the observed diffracted field obviously changes with the displacement in the z direction.

Keywords

Bragg gratings; holographic gratings; image resolution; optical transfer function; 90-deg geometry volume holographic imaging lens system; Bragg mismatch; Bragg selectivity; depth resolution; diffracted field; diffraction efficiency; diffraction imaging characteristics; plane reference beam; point spread function; recording medium; spherical signal beam; volume holographic grating; z direction; Approximation methods; Detectors; Diffraction; Geometry; Imaging; Optimized production technology; Probes; 90-deg geometry; Volume holographic imaging (VHI) system; depth resolution; point spread function (PSF);

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic and Mechanical Engineering and Information Technology (EMEIT), 2011 International Conference on

Conference_Location

Harbin, Heilongjiang

Print_ISBN

978-1-61284-087-1

Type

conf

DOI

10.1109/EMEIT.2011.6023872

Filename

6023872