Study on the simplified phase-shifting digital holographic microscopy

• Published in: Optik (Stuttgart) Vol. 121; no. 14; pp. 1251 - 1256
• Main Authors: Qiu, Peizhen, Wang, Hui, Jin, Hongzhen, Li, Yong, Shi, Yile
• Format: Journal Article
• Language: English
• Published: Reutlingen Elsevier GmbH 01.08.2010; Elsevier
• Subjects: Charge coupled devices; Digital; Digital holographic microscopy; Exact sciences and technology; Fourier analysis; Fourier transforms; Fundamental areas of phenomenology (including applications); Hologram recording and read-out methods; Holography; Image reconstruction; tomography; Imaging and optical processing; In-line holography; Lens-less Fourier holography; Microscopy; Optics; Phase-shifting technique; Physics; Recording; Phase-shifting technique; In-line holography; Digital holographic microscopy; Lens-less Fourier holography; Fourier transformation; Phase shift; Virtual image; Holographic microscopy; Digital holography; Image reconstruction; Holographic recording; Fourier holography; Holograms
• ISSN: 0030-4026; 1618-1336
• DOI: 10.1016/j.ijleo.2009.01.005

In this paper, a new simplified technique for effectively eliminating the zero order and the conjugate virtual image in digital holographic microcopy, which makes use of two-step phase-shifting method of just recording two holograms and an intensity image of object wave, is proposed. Meanwhile, combined with the principle of making full use of spatial bandwidth of the CCD sensor by in-line lens-less Fourier holographic recording geometry, the theory and experimental methods to increase the resolution of the reconstructed image in digital holography by using phase-shifting technique are detailedly analyzed. At end, the validity and availability of this technique has been demonstrated through the off-axis and in-line Fourier transform recording geometry. The study provides some theoretical and experimental guidance for the design and operation of a digital holographic microscopy system.