TY - JOUR
T1 - Complex wavefront reconstruction from multiple-image planes produced by a focus tunable lens
AU - Mosso, Fabián
AU - Peters, Eduardo
AU - Pérez, Darío G.
N1 - Funding Information:
CONICYT (FONDECYT 1100895, FONDECYT 3130433); PUCV (123.731/2014).
Publisher Copyright:
© 2015 Optical Society of America.
PY - 2015/10/15
Y1 - 2015/10/15
N2 - We propose, through simulations and experiments, a wavefront reconstruction techniqueusing a focus-tunable lensand a phase-retrieval technique. A collimated beam illuminates a complex object (amplitude and phase), and a diffuser then modulates the outgoing wavefront. Finally the diffracted complex field reaches the focus-tunable lens, and a CMOS camera positioned at a fixed plane registers the subjective speckle distribution produced by the lens (one pattern for each focal length). We have demonstrated that a tunable lens can replace the translation stage used in the conventional single- beam, multiple-intensity reconstruction algorithm. In other words, through iterations with a modified version of this algorithm, the speckle images produced bydifferent focal lengths can be successfully employed to recover the initial complex object. With no movable elements, (speckle) image sampling can be performed at high frame rates, which is suitable for dynamical reconstruction applications.
AB - We propose, through simulations and experiments, a wavefront reconstruction techniqueusing a focus-tunable lensand a phase-retrieval technique. A collimated beam illuminates a complex object (amplitude and phase), and a diffuser then modulates the outgoing wavefront. Finally the diffracted complex field reaches the focus-tunable lens, and a CMOS camera positioned at a fixed plane registers the subjective speckle distribution produced by the lens (one pattern for each focal length). We have demonstrated that a tunable lens can replace the translation stage used in the conventional single- beam, multiple-intensity reconstruction algorithm. In other words, through iterations with a modified version of this algorithm, the speckle images produced bydifferent focal lengths can be successfully employed to recover the initial complex object. With no movable elements, (speckle) image sampling can be performed at high frame rates, which is suitable for dynamical reconstruction applications.
UR - http://www.scopus.com/inward/record.url?scp=84959461320&partnerID=8YFLogxK
U2 - 10.1364/OL.40.004623
DO - 10.1364/OL.40.004623
M3 - Article
AN - SCOPUS:84959461320
VL - 40
SP - 4623
EP - 4626
JO - Optics Letters
JF - Optics Letters
SN - 0146-9592
IS - 20
ER -