Accelerated wavefront determination technique for optical imaging through scattering medium

Wavefront shaping applied on scattering light is a promising optical imaging method in biological systems. Normally, optimized modulation can be obtained by a Liquid-Crystal Spatial Light Modulator (LC-SLM) and CCD hardware iteration. Here we introduce an improved method for this optimization process. The core of the proposed method is to firstly detect the disturbed wavefront, and then to calculate the modulation phase pattern by computer simulation. In particular, phase retrieval method together with phase conjugation is most effective. In this way, the LC-SLM based system can complete the wavefront optimization and imaging restoration within several seconds which is two orders of magnitude faster than the conventional technique. The experimental results show good imaging quality and may contribute to real time imaging recovery in scattering medium.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[15]  Huichang Zhuang,et al.  Controlled light field concentration through turbid biological membrane for phototherapy. , 2015, Biomedical optics express.

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

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

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

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

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