Laser & Optoelectronics Progress, Volume. 48, Issue 5, 50901(2011)
Depth Resolution of 90° Geometry Volume Holographic Imaging System
Diffraction imaging characteristics of a 90° geometry volume holographic imaging system are investigated. 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 volume holographic grating, the Bragg mismatch of diffraction imaging in z direction significantly decreases diffraction efficiency. The point spread function (PSF) of volume holographic imaging system is employed to analyze diffraction imaging characteristics and estimate depth resolution. The results show that the observed diffraction field obviously changes with the displacement of point source in z direction.
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Shen Wenmei, Jiang Zhuqing, Chen Guofeng, Song Lei, Tao Shiquan. Depth Resolution of 90° Geometry Volume Holographic Imaging System[J]. Laser & Optoelectronics Progress, 2011, 48(5): 50901
Category: Holography
Received: Aug. 4, 2010
Accepted: --
Published Online: May. 9, 2011
The Author Email: Wenmei Shen (shenwenm@sohu.com)