Enhanced deterministic phase retrieval using a partially developed speckle field

被引：31

作者：

Almoro, Percival F. ^{[1
]}

Waller, Laura ^{[2
]}

Agour, Mostafa ^{[3
,4
]}

Falldorf, Claas ^{[3
]}

Pedrini, Giancarlo ^{[5
]}

Osten, Wolfgang ^{[5
]}

Hanson, Steen G. ^{[6
]}

机构：

[1] Univ Philippines, Natl Inst Phys, Quezon City 1101, Philippines

[2] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA

[3] Bremer Inst Angew Strahltech, D-28359 Bremen, Germany

[4] S Valley Univ, Aswan Fac Sci, Dept Phys, Aswan 81528, Egypt

[5] Univ Stuttgart, Inst Tech Opt, D-70569 Stuttgart, Germany

[6] Danish Tech Univ, Dept Photon Engn, DTU Foton, DK-4000 Roskilde, Denmark

来源：

OPTICS LETTERS | 2012年 / 37卷 / 11期

关键词：

SPATIAL LIGHT-MODULATOR; TRANSPORT;

D O I：

10.1364/OL.37.002088

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A technique for enhanced deterministic phase retrieval using a partially developed speckle field (PDSF) and a spatial light modulator (SLM) is demonstrated experimentally. A smooth test wavefront impinges on a phase diffuser, forming a PDSF that is directed to a 4f setup. Two defocused speckle intensity measurements are recorded at the output plane corresponding to axially-propagated representations of the PDSF in the input plane. The speckle intensity measurements are then used in a conventional transport of intensity equation (TIE) to reconstruct directly the test wavefront. The PDSF in our technique increases the dynamic range of the axial intensity derivative for smooth phase objects, resulting in a more robust solution to the TIE. The SLM setup enables a fast and accurate recording of speckle intensity. Experimental results are in good agreement with those obtained using the iterative phase retrieval and digital holographic methods of wavefront reconstruction. (C) 2012 Optical Society of America

引用

页码：2088 / 2090

页数：3