Terahertz in-line digital holography of dragonfly hindwing: amplitude and phase reconstruction at enhanced resolution by extrapolation.

We report here on terahertz (THz) digital holography on a biological specimen. A continuous-wave (CW) THz in-line holographic setup was built based on a 2.52 THz CO(2) pumped THz laser and a pyroelectric array detector. We introduced novel statistical method of obtaining true intensity values for the pyroelectric array detector's pixels. Absorption and phase-shifting images of a dragonfly's hindwing were reconstructed simultaneously from single in-line hologram. Furthermore, we applied phase retrieval routines to eliminate twin image and enhanced the resolution of the reconstructions by hologram extrapolation beyond the detector area. The finest observed features are 35 μm width cross veins.

[1]  D. Gabor.  A New Microscopic Principle , 1948, Nature.

[2]  Myung K. Kim,et al.  Terahertz digital holography using angular spectrum and dual wavelength reconstruction methods. , 2011, Optics express.

[3]  T. Latychevskaia,et al.  On artefact-free reconstruction of low-energy (30-250eV) electron holograms. , 2013, Ultramicroscopy.

[4]  李艳,et al.  Twin image elimination from two in-line holograms via phase retrieval , 2012 .

[5]  Ronan J. Mahon,et al.  Digital holography at millimetre wavelengths , 2006 .

[6]  Chen Ying-Long,et al.  Biomechanical behaviors of dragonfly wing: relationship between configuration and deformation , 2012 .

[7]  Yun-Da Li,et al.  Continuous-wave terahertz in-line digital holography. , 2012, Optics letters.

[8]  Derek Abbott,et al.  Terahertz Imaging for Biomedical Applications: Pattern Recognition and Tomographic Reconstruction , 2012 .

[9]  A. Murphy,et al.  Terahertz holographic image reconstruction and analysis , 2004, Infrared and Millimeter Waves, Conference Digest of the 2004 Joint 29th International Conference on 2004 and 12th International Conference on Terahertz Electronics, 2004..

[10]  D. Gabor.  Microscopy by reconstructed wave-fronts , 1949, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[11]  Phase retrieval from double axially displaced holograms for dual-wavelength in-line holography , 2014 .

[12]  Q. Li,et al.  Experimental research on resolution improvement in CW THz digital holography , 2012 .

[13]  T. Latychevskaia,et al.  Solution to the twin image problem in holography. , 2006, Physical review letters.

[14]  Loc Vu-Quoc,et al.  On the vein-stiffening membrane structure of a dragonfly hind wing , 2009 .

[15]  V.M. Popik,et al.  Terahertz imaging and holography with a high-power free electron laser , 2005, 2005 Joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics.

[16]  Oleg A. Shevchenko,et al.  Classic holography, tomography and speckle metrology using a high-power terahertz free electron laser and real-time image detectors , 2010, 35th International Conference on Infrared, Millimeter, and Terahertz Waves.

[17]  G. Pedrini,et al.  Whole optical wave field reconstruction from double or multi in-line holograms by phase retrieval algorithm. , 2003, Optics express.

[18]  Christoph Koch,et al.  Off-axis and in line electron holography: experimental comparison , 2010 .

[19]  Tatiana Latychevskaia,et al.  Coherent microscopy at resolution beyond diffraction limit using post-experimental data extrapolation , 2013 .

[20]  T. Latychevskaia,et al.  Simultaneous reconstruction of phase and amplitude contrast from a single holographic record. , 2009, Optics express.

[21]  Yan Li,et al.  Iterative solution to twin image problem in in-line digital holography , 2013 .

[22]  David Lentink,et al.  Structural Analysis of a Dragonfly Wing , 2010 .

[23]  Corinne Fournier,et al.  Twin-image noise reduction by phase retrieval in in-line digital holography , 2005, SPIE Optics + Photonics.

[24]  T. Latychevskaia,et al.  When holography meets coherent diffraction imaging. , 2011, Optics express.

[25]  D. M. Paganin,et al.  Re-sampling of inline holographic images for improved reconstruction resolution , 2009 .

[26]  Simultaneous measurement of the shape and thickness of a dragonfly wing , 1996 .

[27]  Wolfgang Osten,et al.  Reconstruction of in-line digital holograms from two intensity measurements. , 2004, Optics letters.

[28]  Tatiana Latychevskaia,et al.  Resolution enhancement in digital holography by self-extrapolation of holograms. , 2013, Optics express.

[29]  Yun-Da Li,et al.  Continuous-wave terahertz digital holography by use of a pyroelectric array camera. , 2011, Optics letters.

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

[31]  Z. Zhong,et al.  Micro and nano structures and morphologies on the wing veins of dragonflies , 2010 .

[32]  Yun-Da Li,et al.  Experimental research on terahertz Gabor inline digital holography of concealed objects. , 2012, Applied optics.

[33]  Olof Bryngdahl,et al.  Single-Sideband Holography* , 1968 .

[34]  Yun-Da Li,et al.  Research on Reconstruction Algorithms in 2.52 THz Off–axis Digital Holography , 2012 .

[35]  Denis Joyeux,et al.  Iterative algorithms for twin-image elimination in in-line holography using finite-support constraints , 1993 .