Abstract

An improved method for resolution of object reconstruction using phase retrieval by use of a scanning slit aperture is proposed. The reconstruction is based on measurements of the Fraunhofer diffraction intensities of wave fields transmitted through a scanning slit in the Fresnel-zone plane of an object. In the improved method, the measurement coordinates of the intensities depend not only on the slit's position used in a previous method but also on the slit's position scaled by the ratio between two distances among the object, Fresnel-zone, and detector planes. The spatial-frequency band for the object reconstruction, which is limited in a previous method by the extent of the Fourier transform of the slit function, can be extended to the bandwidth dependent on the scanning area with the slit. In addition, even in the measurement of the Fresnel diffraction intensities of wave fields transmitted through the slit, the improved resolution can be retained by compensation for a transverse shift of the intensities.

© 2006 Optical Society of America

Phase retrieval from diffraction intensities by use of a scanning slit aperture

Nobuharu Nakajima
Appl. Opt. 44(29) 6228-6234 (2005)

Lensless imaging from diffraction intensity measurements by use of a noniterative phase-retrieval method

Nobuharu Nakajima
Appl. Opt. 43(8) 1710-1718 (2004)

High-resolution scanning phase retrieval with a probe beam of unknown modulus

Nobuharu Nakajima
Appl. Opt. 36(17) 3904-3911 (1997)

Phase retrieval from a high-numerical-aperture intensity distribution by use of an aperture-array filter

Nobuharu Nakajima
J. Opt. Soc. Am. A 26(10) 2172-2180 (2009)

Coherent diffractive imaging beyond the Fresnel approximation using a deterministic phase-retrieval method with an aperture-array filter

Nobuharu Nakajima
Appl. Opt. 52(7) C1-C10 (2013)