A visible light ptychography imaging method based on pre-known surrounding amplitude information is proposed,in order to effectively improve accuracy and robustness of the reconstruction.The method employs a known standard object as priori information which surrounds the sample.Ptychography scans the sample and the pre-known surrounding information,and then introduces them into the iterative algorithm.Finally a high quality reconstruction result is achieved after several iterations.With the simulations and by setting up the optical system,the experiments on different samples are carried out to further study its validity and versatility.In addition,the method shows a good anti-noise performance and anti-probe-offset capability.Due to the pre-known information constraint,a high quality reconstruction is completed without additional cost.The method also maintains the superiority of the traditional ptychography.This method is analyzed and proved to be simple-to-operate,steady,and versatile.The ptychography based on the pre-known information constraint has a quite promising practical value.
WANG Zhibo
,
ZHANG Jun
,
LI Tuo
,
SHI Yishi
. Photoelectric ptychographical imaging based on pre-known amplitude information constraint[J]. Journal of University of Chinese Academy of Sciences, 2017
, 34(5)
: 543
-550
.
DOI: 10.7523/j.issn.2095-6134.2017.05.003
[1] Miao J, Charalambous P, Kirz J, et al. Extending the methodology of X-ray crystallography to allow imaging of micrometre-sized non-crystalline specimens[J]. Nature, 1999, 400(6742):342-344.
[2] Thibault P, Dierolf M, Bunk O, et al. Probe retrieval in ptychographic coherent diffractive imaging[J]. Ultramicroscopy, 2009, 109(4):338-343.
[3] Rodenburg J M. Ptychography and related diffractive imaging methods[J]. Physics, 2008, 150:87-184.
[4] Hoppe W, Strube G. Diffraction in inhomogeneous primary wave fields. 2. Optical experiments for phase determination of lattice interferences[J]. Acta Crystallogr A, 1969, 25:502-507.
[5] Faulkner H M L, Rodenburg J M. A phase retrieval algorithm for shifting illumination[J]. Applied Physics Letters, 2004, 85(20):4795-4797.
[6] Shi Y S, Li T, Wang Y L, et al. Optical image encryption via ptychography[J]. Optics Letters, 2013, 38(9):1425-1427.
[7] Godden T M, Suman R, Humphry M J, et al. Ptychographic microscope for three-dimensional imaging[J]. Optics Express, 2014, 22(10):12513.
[8] 王治昊,李拓,王雅丽,等. 基于旋转相位编码与照明光束匹配的叠层衍射成像算法研究[J]. 物理学报, 2014, 63(16):191-197.
[9] 王雅丽,史祎诗,李拓,等. 可见光域叠层成像中照明光束的关键参量研究[J]. 物理学报, 2013, 62(6):201-210.
[10] Li T, Shi Y S. Security risk of diffractive-imaging-based optical cryptosystem[J]. Opt Express, 2015, 23(16):21384-21391.
[11] Li T, Shi Y S. Attack on optical double random phase encryption based on the principle of ptychographical imaging[J].Chinese Physics Letters, 2016, 33(1):63-66.
[12] 刘祥磊,潘泽,王雅丽,等. 基于叠层衍射的数字水印算法研究[J]. 物理学报, 2015,64(23):85-94.
[13] Alexander J, Walter H, Stefan B, et al. Quantitative single-shot imaging of complex objects using phase retrieval with a designed periphery[J]. Optics Express, 2012, 20(5):5470-5480.
[14] 周光照,佟亚军,陈灿,等. 相干X射线衍射成像的数字模拟研究[J]. 物理学报, 2011, 60(2):772-778.
[15] Maiden A M, Rodenburg J M. An improved ptychographical phase retrieval algorithm for diffractive imaging[J]. Ultramicroscopy, 2009, 109(10):1256-1262.
