Publications

2017
S. Frishman, M. Razvag, and A.J. Agranat. 2017. “Fast electroholographic wavelength selective switching implemented in a slab waveguide.” Optics Letters, 42, 18, Pp. 3582-3585. Publisher's Version

Accession Number: edselc.2-52.0-85029542268; (Optics Letters, 15 September 2017, 42(18):3582-3585) Publication Type: Academic Journal; Rights: Copyright 2017 Elsevier B.V., All rights reserved.

Jacopo Parravicini, Eugenio DelRe, Aharon J. Agranat, and Gianbattista Parravicini. 2017. “Liquid–solid directional composites and anisotropic dipolar phases of polar nanoregions in disordered perovskites..” Nanoscale, 9, 27, Pp. 9572. Publisher's Version
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2 ) Ferraro, M. ( 1, D. ( 1 ) Pierangeli, M. ( 1 ) Flammini, 3 ) Di Domenico, G. ( 1, L. ( 1 ) Falsi, F. ( 1 ) Di Mei, 5 ) DelRe, E. ( 1, and A.J. ( 4 ) Agranat. 2017. “Observation of polarization-maintaining light propagation in depoled compositionally disordered ferroelectrics.” Optics Letters, 42, 19, Pp. 3856-3859. Publisher's Version

Accession Number: edselc.2-52.0-85030166180; (Optics Letters, 1 October 2017, 42(19):3856-3859) Publication Type: Academic Journal; Rights: Copyright 2017 Elsevier B.V., All rights reserved.

2 ) Martínez-Lorente, R. ( 1, E. ( 2 ) Delre, J. ( 3 ) Parravicini, M. ( 4 ) Brambilla, 6 ) Columbo, L. ( 5, F. ( 7 ) Prati, C. ( 8 ) Rizza, and A.J. ( 9 ) Agranat. 2017. “Scalable Electro-Optic Control of Localized Bistable Switching in Broad-Area VCSELs Using Reconfigurable Funnel Waveguides.” Physical Review Applied, 7, 6. Publisher's Version

Accession Number: edselc.2-52.0-85020710954; (Physical Review Applied, 6 June 2017, 7(6)) Publication Type: Academic Journal; Rights: Copyright 2017 Elsevier B.V., All rights reserved.

2 3 ) Bekenstein, R. ( 1, Y. ( 1 ) Sharabi, O. ( 1 ) Tal, M. ( 1 ) Segev, Y. ( 4 ) Kabessa, A.J. ( 4 ) Agranat, N. ( 5 ) Engheta, and G. ( 6 ) Eisenstein. 2017. “Control of light by curved space in nanophotonic structures.” Nature Photonics, 11, 10, Pp. 664-670. Publisher's Version

Accession Number: edselc.2-52.0-85030260940; (Nature Photonics, 1 October 2017, 11(10):664-670) Publication Type: Academic Journal; Rights: Copyright 2017 Elsevier B.V., All rights reserved.

G Di Domenico, E DelRe, G Antonacci, S Silvestri, J Parravicini, and AJ Agranat. 2017. “Miniaturized photogenerated electro-optic axicon lens Gaussian-to-Bessel beam conversion.” Applied Optics, 56, 10, Pp. 2908-2911. Publisher's Version

Accession Number: edselc.2-52.0-85016612707; (Applied Optics, 1 April 2017, 56(10):2908-2911) Publication Type: Academic Journal; Rights: Copyright 2017 Elsevier B.V., All rights reserved.

Shimshon Belkin, Sharon Yagur-Kroll, Yossef Kabessa, Victor Korouma, Tali Septon, Yonatan Anati, Cheinat Zohar-Perez, Zahi Rabinovitz, Amos Nussinovitch, and Aharon J. Agranat. 2017. “Remote detection of buried landmines using a bacterial sensor..” Nature Biotechnology, 35, 4, Pp. 308 - 310. Publisher's Version

Accession Number: 28398330. Language: English. Date Revised: 20170418. Date Created: 20170411. Update Code: 20170419. Publication Type: Journal Article. Journal ID: 9604648. Publication Model: Print. Cited Medium: Internet. NLM ISO Abbr: Nat. Biotechnol.. Comment: Cites: Appl Microbiol Biotechnol. 2014 Jan;98(2):885-95. (PMID: 23615740). Cites: Front Microbiol. 2016 Sep 22;7:1490. (PMID: 27713734). Cites: Biosens Bioelectron. 2013 Nov 15;49:394-8. (PMID: 23800611). Cites: Appl Microbiol Biotechnol. 2015 Sep;99(17):7177-88. (PMID: 25981994). Cites: Biosens Bioelectron. 2016 May 15;79:784-8. (PMID: 26774094). Linking ISSN: 10870156. Subset: In-Data-Review; Date of Electronic Publication: 20170411. Current Imprints: Publication: New York Ny : Nature America Publishing; Original Imprints: Publication: New York, NY : Nature Pub. Co., [1996-

2016
D Pierangeli, G Musarra, F Di Mei, G Di Domenico, AJ Agranat, C Conti, and E DelRe. 2016. “Enhancing optical extreme events through input wave disorder..” Physical Review A: Atomic, Molecular & Optical Physics, 94, 6, Pp. 1 - 1. Publisher's Version Abstract

We demonstrate how the emergence of extreme events strongly depends on the correlation length of the input field distribution. Observing the behavior of optical waves in turbulent photorefractive propagation with partially incoherent excitations, we find that rogue waves are strongly enhanced for a characteristic input correlation scale. Waveform analysis identifies this scale with a characteristic peak-intensity-independent wave size, suggesting a general role played by saturation in the nonlinear response in rogue phenomena. [ABSTRACT FROM AUTHOR]Copyright of Physical Review A: Atomic, Molecular & Optical Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Accession Number: 120813802; Pierangeli, D. 1; Email Address: davide.pierangeli@roma1.infn.it Musarra, G. 1 Di Mei, F. 1 Di Domenico, G. 1 Agranat, A. J. 2 Conti, C. 1,3 DelRe, E. 1; Affiliation: 1: Dipartimento di Fisica, Università di Roma "La Sapienza", 00185 Rome, Italy 2: Applied Physics Department, Hebrew University of Jerusalem, 91904 Jerusalem, Israel 3: ISC-CNR, Università di Roma "La Sapienza", 00185 Rome, Italy; Source Info: Dec2016, Vol. 94 Issue 6, p1; Subject Term: Wave analysis; Subject Term: Photorefractive effect; Subject Term: Rogue waves; Reviews & Products: Physical Review (Periodical); People: Pierangeli, D.; People: Musarra, G.; People: Di Mei, F.; People: Di Domenico, G.; People: Agranat, A. J.; People: Conti, C.; People: DelRe, E.; Number of Pages: 1p; Document Type: Article

F Di Mei, P Caramazza, D Pierangeli, G Di Domenico, P Di Porto, E DelRe, H Ilan, and AJ Agranat. 2016. “Intrinsic negative mass from nonlinearityIntrinsic negative mass from nonlinearity.” Physical Review Letters, 116, 15. Publisher's Version

Accession Number: edselc.2-52.0-84963815267; (Physical Review Letters, 14 April 2016, 116(15)) Publication Type: Academic Journal; Rights: Copyright 2016 Elsevier B.V., All rights reserved.

Jacopo Parravicini, Eugenio DelRe, Aharon J Agranat, and Gianbattista Parravicini. 2016. “Macroscopic response and directional disorder dynamics in chemically substituted ferroelectrics..” Physical Review B: Condensed Matter & Materials Physics, 93, 9, Pp. 1 - 1. Publisher's Version Abstract
Using temperature-resolved dielectric spectroscopy in the range 25-320 K we investigate the macroscopic response, phase symmetry, and order/disorder states in bulk ferroelectric K1-yLiyTa1-xNbx (KLTN). Four long-range symmetry phases are identified with their relative transitions. Directional analysis of the order/disorder states using Fröhlich entropy indicates global symmetry breaking along the growth axis and an anisotropic dipolar effective thermodynamic behavior, which ranges from disordered to ordered at the same temperature for different directions in the sample. Results indicate that the macroscopic polarization, driven by nanosized polar regions, follows a microscopic perovskite eight-sites lattice model. [ABSTRACT FROM AUTHOR]Copyright of Physical Review B: Condensed Matter & Materials Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Accession Number: 117488397; Parravicini, Jacopo 1,2; Email Address: jacopo.parravicini@roma1.infn.it DelRe, Eugenio 1 Agranat, Aharon J. 3 Parravicini, Gianbattista 4,5; Affiliation: 1: Dipartimento di Fisica, "Sapienza" Università di Roma, 00185 Roma, Italy 2: Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, 20125 Milano, Italy 3: Applied Physics Department, Hebrew University of Jerusalem, 91904, Israel 4: Dipartmento di Fisica, Università di Pavia, 27100 Pavia, Ita 5: IPCF-CNR, "Sapienza" Università di Roma, 00185 Roma, Italy; Source Info: Mar2016, Vol. 93 Issue 9, p1; Subject Term: PHYSICS periodicals; Subject Term: FERROELECTRIC crystals; Subject Term: BROKEN symmetry (Physics); Subject Term: LATTICE models (Statistical physics); Subject Term: FERROELECTRIC materials; People: PARRAVICINI, Jacopo; People: DELRE, Eugenio; People: AGRANAT, Aharon J.; People: PARRAVICINI, Gianbattista; Number of Pages: 1p; Document Type: Article
Y Kabessa, O Eyal, O Bar-On, V Korouma, S Yagur-Kroll, S Belkin, and AJ Agranat. 2016. “Standoff Detection of Buried Landmines Using Genetically Engineered Fluorescent Bacterial Sensors.” Biosensors & Bioelectronics , 79, Pp. 784- 788.
D Pierangeli, M ( 1 ) Ferraro, 2 ) Di Mei, F. ( 1, 2 ) Di Domenico, G. ( 1, E ( 1 ) Del Re, CEM ( 3 De Oliveira, and AJ ( 3 ) Agranat. 2016. “Super-crystals in composite ferroelectrics.” Nature Communications, 7. Publisher's Version

Accession Number: edselc.2-52.0-84959422733; (Nature Communications, 24 February 2016, 7) Publication Type: Academic Journal; Rights: Copyright 2016 Elsevier B.V., All rights reserved.

D Pierangeli, F Di Mei, G Di Domenico, AJ Agranat, C Conti, and E DelRe. 2016. “Turbulent Transitions in Optical Wave Propagation..” Physical Review Letters, 117, 18, Pp. 183902 - 183902. Publisher's Version Abstract

We report the direct observation of the onset of turbulence in propagating one-dimensional optical waves. The transition occurs as the disordered hosting material passes from being linear to one with extreme nonlinearity. As the response grows, increased wave interaction causes a modulational unstable quasihomogeneous flow to be superseded by a chaotic and spatially incoherent one. Statistical analysis of high-resolution wave behavior in the turbulent regime unveils the emergence of concomitant rogue waves. The transition, observed in a photorefractive ferroelectric crystal, introduces a new and rich experimental setting for the study of optical wave turbulence and information transport in conditions dominated by large fluctuations and extreme nonlinearity.;

Accession Number: 27834998. Language: English. Date Revised: 20161112. Date Created: 20161111. Update Code: 20161114. Publication Type: Journal Article. Journal ID: 0401141. Publication Model: Print-Electronic. Cited Medium: Internet. NLM ISO Abbr: Phys. Rev. Lett.. Linking ISSN: 00319007. Subset: In-Data-Review; Date of Electronic Publication: 2016 Oct 28. ; Original Imprints: Publication: New York : American Physical Society

2015
D Pierangeli, M Flammini, Di F Mei, J Parravicini, CEM de Oliveira, AJ Agranat, and Del E Re. 2015. “Continuous solitons in lattice nonlinearity.” Phys. Rev. Lett, 114, 20, Pp. 203901.
J Parravicini, Di F Mei, D Pierangeli, AJ Agranat, and E DelRe. 2015. “Miniaturized electro-optic infrared beam-manipulator based on 3D photorefractive funnels..” Journal of Optics, 17, 5, Pp. 1 - 1. Publisher's Version Abstract

We demonstrate tunable electro-optic guiding, shaping, and switching of beams in the near infrared spectrum ( 980 nm), typical of VCSEL technology, using biomimetic 3D funnel waveguides miniaturized into a sample of potassium–lithium–tantalate–niobate. The switchable waveguides are written using the slow photorefractive build-up of a 3D volume space-charge field caused by a diffracting continuous wave low intensity λ = 532 nm beam, and electro-optic functionality is supported by the quadratic electro-optic effect of the high-symmetry paraelectric phase. [ABSTRACT FROM AUTHOR]Copyright of Journal of Optics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Accession Number: 102282746; J Parravicini 1,2; Email Address: jacopo.parravicini@roma1.infn.it F Di Mei 1,3 D Pierangeli 1 A J Agranat 4 E DelRe 1,2; Affiliation: 1: Dipartimento di Fisica, ‘Sapienza’ Università di Roma, I-00185 Roma, Italy 2: IPCF-CNR, ‘Sapienza’ Università Roma, I-00185 Roma, Italy 3: Center for Life Nano Science Sapienza, Istituto Italiano di Tecnologia, I-00161 Roma, Italy 4: Applied Physics Department, Hebrew University of Jerusalem, IL-91904 Israel; Source Info: May2015, Vol. 17 Issue 5, p1; Subject Term: MINIATURE electronic equipment; Subject Term: ELECTRO-optical modulation; Subject Term: PHOTOREFRACTIVE effect; Subject Term: BIOMIMETIC materials; Subject Term: SURFACE emitting lasers; Subject Term: NEAR infrared spectroscopy; Number of Pages: 1p; Document Type: Article

F Di Mei, D Pierangeli, J Parravicini, C Conti, AJ Agranat, and E DelRe. 2015. “Observation of diffraction cancellation for nonparaxial beams in the scale-free-optics regime..” Physical Review A: Atomic, Molecular & Optical Physics, 92, 1-B, Pp. 1 - 5. Publisher's Version Abstract
We report the observation of diffraction cancellation for visible beams with widths from tens of wavelengths down to fractions of the optical wavelength. The phenomenon is observed at the transition from diffraction- to antidiffraction-dominated beam propagation, triggered by a thermal shock in a photorefractive nanodisordered lithium-enriched potassium-tantalate-niobate (KTN:Li) crystal. Here beams propagate without distortion, independently of intensity and size. Confirming the main prediction of the scale-free-optics model, we find a single unified light behavior that spans across the entire hierarchy of standard optical spatial scales, from wide plane-wave-like beams that obey geometrical optics down to ultranarrow beams with widths of the order of a single wavelength. [ABSTRACT FROM AUTHOR]Copyright of Physical Review A: Atomic, Molecular & Optical Physics is the property of American Physical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Accession Number: 108999818; Di Mei, F. 1,2 Pierangeli, D. 1 Parravicini, J. 1 Conti, C. 1,3 Agranat, A. J. 4 DelRe, E. 1,3; Email Address: eugenio.delre@uniroma1.it; Affiliation: 1: Dipartimento di Fisica, Università di Roma "La Sapienza," 00185 Rome, Italy 2: Center for Life Nanoscience, Sapienza, Istituto Italiano di Tecnologia, 00161 Rome, Italy 3: ISC-CNR, Università di Roma "La Sapienza," 00185 Rome, Italy 4: Brojde Center for Innovative Engineering and Computer Science, Hebrew University, Jeruslaem 91904, Israel; Source Info: Jul2015, Vol. 92 Issue 1-B, p1; Subject Term: SCALE-free network (Statistical physics); Subject Term: WAVELENGTHS; Subject Term: OPTICAL diffraction; Subject Term: OBSERVATION (Scientific method); Subject Term: PHOTOREFRACTIVE effect; Number of Pages: 5p; Document Type: Article
R Bekenstein, Y Kabessa, O Tal, MA Bandres, AJ Agranat, and M Segev. 2015. “Observing Light Dynamics in Micro-sized Schwarzschild Metric.” In QELS Fundamental Science, Pp. FTu4C.2.
Ayelet Badichi Yashar, Harel Ilan, and Aharon J Agranat. 2015. “Construction of waveguiding structures in potassium lithium tantalate niobate crystals by combined laser ablation and ion implantation.” App. Phys. A-Mat. Sci. & Process, 118, 2, Pp. 403-407. Publisher's Version Abstract
A generic methodology for constructing complex integrated electro-optic circuits in waveguided configurations is presented. The method is based on combining two techniques, 'laser ablation' and 'refractive index engineering by ion implantations.' The constructed circuits are side-cladded by air trenches that were produced using laser ablation and bottom-cladded by a layer with a reduced refractive index which is generated through the implantation of He.sup.+ ions. This fabrication technique enables the construction of circular structures with complex geometry featuring small radii of curvature, and further can be employed to construct microfluidic channels on the same substrate. The research demonstrates waveguides in both linear and circular configurations that were constructed in a potassium lithium tantalate niobate (KLTN) substrate using the aforementioned method, proving that this substrate is a suitable candidate for use in creating laboratories-on-a-chip with multifunctional capabilities. The proposed techniques used in the research are generic and applicable to a wide range of substrates.
Item Citation: Applied Physics A: Materials Science & Processing. Feb 2015, Vol. 118 Issue 2, p403, 5 p.Accession Number: edsgcl.398406950; Publication Type: Academic Journal; Source: Applied Physics A: Materials Science & Processing; Language: English; Publication Date: 20150201; Rights: Copyright 2015 Gale, Cengage Learning. All rights reserved., COPYRIGHT 2015 Springer; Imprint: Springer
Yossef Kabessa, Amir Yativ, Harel Ilan, and Aharon J Agranat. 2015. “Electro-Optical Modulation with Immunity to Optical Damage by Bipolar Operation in Potassium Lithium Tantalate Niobate.” Optics express , 23, 4, Pp. 4348-4356. Abstract
A method for suppressing the formation of optical damage in quadratic electrooptic devices operated at short wavelengths is presented. Formation of optical damage is attributed to the generation of a trapped space charge induced by photoionization of impurity ions by the propagating beam. It is shown that in potassium lithium tantalate niobate where the electrooptic effect is quadratic, operating the electrooptic device by a bipolar driving voltage prevents the space charge from accumulating, which inhibits the formation of the optical damage. A 6 hours continuous operation of electrooptic modulator for a 30 W/cm2 at λ = 445 nm input beam is demonstrated.
D ( 1 ) Pierangeli, 2 ) Di Mei, F. ( 1, 3 ) Conti, C. ( 1, E ( 1 ) Del Re, and AJ ( 4 ) Agranat. 2015. “Spatial Rogue Waves in Photorefractive Ferroelectrics.” Physical Review Letters, 115, 9. Publisher's Version Abstract

Rogue waves are observed as light propagates in the extreme nonlinear regime that occurs when a photorefractive ferroelectric crystal is undergoing a structural phase transition. The transmitted spatial light distribution contains bright localized spots of anomalously large intensity that follow a signature long-tail statistics that disappears as the nonlinearity is weakened. The isolated wave events form as out-of-equilibrium response and disorder enhance the Kerr-saturated nonlinearity at the critical point. Self-similarity associable to the individual observed filaments and numerical simulations of the generalized nonlinear Schrodinger equation suggests that dynamics of soliton fusions and scale invariance can microscopically play an important role in the observed rogue intensities and statistics.

Accession Number: edselc.2-52.0-84940688543; (Physical Review Letters, 25 August 2015, 115(9)) Publication Type: Academic Journal; Rights: Copyright 2015 Elsevier B.V., All rights reserved.

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