An improved wavefront determination method based on phase conjugation for imaging through thin scattering medium

Wavefront shaping applied on scattering light is an efficient method for imaging through thin scattering layers. Normally, optimized modulation can be obtained by a liquid-crystal spatial light modulator (LCSLM) and CCD hardware iteration. In this paper, an improved method for such an optimization process is introduced. The core of the proposed method is to firstly detect the disturbed wavefront, and then to calculate the modulation phase pattern by computer simulation. Fast processing speed resulting in high quality images have been achieved with this new approach. Using supposition of conjugated phase of the scattering wavefront and a Fresnel phase scheme, more than two orders of magnitude improvement in processing speed for imaging restoration was shown compared to the LCSLM-CCD iteration method.

[1]  Changhuei Yang,et al.  Translation correlations in anisotropically scattering media , 2014, 1411.7157.

[2]  D. Conkey,et al.  Genetic algorithm optimization for focusing through turbid media in noisy environments. , 2012, Optics express.

[3]  Tomasz Kozacki,et al.  On resolution and viewing of holographic image generated by 3D holographic display. , 2010, Optics express.

[4]  I. Freund.  Looking through walls and around corners , 1990 .

[5]  Meng Cui,et al.  High-resolution in vivo imaging of mouse brain through the intact skull , 2015, Proceedings of the National Academy of Sciences.

[6]  R. Raskar,et al.  Recovering three-dimensional shape around a corner using ultrafast time-of-flight imaging , 2012, Nature Communications.

[7]  Feng,et al.  Memory effects in propagation of optical waves through disordered media. , 1988, Physical review letters.

[8]  Feng,et al.  Correlations and fluctuations of coherent wave transmission through disordered media. , 1988, Physical review letters.

[9]  A. Mosk,et al.  Phase control algorithms for focusing light through turbid media , 2007, 0710.3295.

[10]  C. Aegerter,et al.  Scattered light fluorescence microscopy in three dimensions. , 2012, Optics express.

[11]  Hui Wang,et al.  Hiding scattering layers for noninvasive imaging of hidden objects , 2015, Scientific Reports.

[12]  Jianping Ding,et al.  Light field shaping by tailoring both phase and polarization. , 2014, Applied optics.

[13]  A. Mosk,et al.  Exploiting disorder for perfect focusing , 2009, 0910.0873.

[14]  M. Fink,et al.  Non-invasive single-shot imaging through scattering layers and around corners via speckle correlations , 2014, Nature Photonics.

[15]  O. Katz,et al.  Looking around corners and through thin turbid layers in real time with scattered incoherent light , 2012, Nature Photonics.

[16]  Thomas S. Huang,et al.  Digital Holography , 2003 .

[17]  G. Lerosey,et al.  Controlling waves in space and time for imaging and focusing in complex media , 2012, Nature Photonics.

[18]  Amanda J. Wright,et al.  Adaptive optics in an optical trapping system for enhanced lateral trap stiffness at depth , 2013 .

[19]  Changhuei Yang,et al.  Guidestar-assisted wavefront-shaping methods for focusing light into biological tissue , 2015, Nature Photonics.

[20]  I. Vellekoop.  Feedback-based wavefront shaping. , 2015, Optics express.

[21]  J. Goodman.  Introduction to Fourier optics , 1969 .

[22]  Sylvain Gigan,et al.  Image transmission through an opaque material. , 2010, Nature communications.

[23]  Demetri Psaltis,et al.  Three-dimensional scanning microscopy through thin turbid media. , 2012, Optics express.

[24]  G. Pedrini,et al.  Phase retrieval of arbitrary complex-valued fields through aperture-plane modulation , 2007 .

[25]  Yefeng Guan,et al.  Image restoration through thin turbid layers by correlation with a known object. , 2013, Optics express.