## Phase Retrieval from Experimental Far-Field Intensities by Use of a Gaussian Beam

Applied Optics, Vol. 41, Issue 20, pp. 4133-4139 (2002)

http://dx.doi.org/10.1364/AO.41.004133

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### Abstract

The noniterative phase-retrieval method by use of Gaussian filtering is applied to the reconstruction of phase objects from experimental far-field intensities. In this method, the complex amplitude of transmitted light through an object is reconstructed from three far-field intensities, which are measured with the modulation of the object by laterally shifted and unshifted Gaussian filters. In the experiment, the amplitude of a Gaussian beam illuminating objects is utilized as a Gaussian filter, and, as the phase objects, a converging lens with a small exit pupil and a plastic fiber immersed in optical adhesive are used. The experimental results show that the Gaussian beam of a laser is capable of retrieving the phases of those objects with the accuracy of the range from ~1/10 to 1/4 of the laser’s wavelength.

© 2002 Optical Society of America

**OCIS Codes**

(100.0100) Image processing : Image processing

(100.5070) Image processing : Phase retrieval

**Citation**

Nobuharu Nakajima and Masaomi Watanabe, "Phase Retrieval from Experimental Far-Field Intensities by Use of a Gaussian Beam," Appl. Opt. **41**, 4133-4139 (2002)

http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-20-4133

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