Photorefractive Photonics and Beyond

A special issue of Photonics (ISSN 2304-6732).

Deadline for manuscript submissions: closed (9 December 2022) | Viewed by 2959

Special Issue Editors

Physics and Astronomy Department, University of Padova, Via Marzolo 8, 35131 Padova, Italy
Interests: photorefractive hybrid materials; integrated photonics; opto-microfluidics; photovoltaic manipulation; optical tweezers; single-molecule force spectroscopy; materials characterization
Physics and Astronomy Department, University of Padova, Via Marzolo 8, 35131 Padova, Italy
Interests: light-induced effects; opto-microfluidics; integrated optics; sensing; coatings; nanoparticles
Dipartimento di Fisica e Astronomia, Università di Padova, Via Marzolo 8, 35131 Padova, Italy
Interests: charge transport in ferroelectric oxides; optical coatings; integrated photonics; gravitational wave science; materials characterization
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Special Issue Information

Dear Colleagues,

We are pleased to invite you to contribute to a Special Issue dedicated to “Photorefractive Photonics and Beyond”, spanning over a wide range of research areas sharing interest in the description of fundamental physics, on the basic phenomena besides light–matter interaction or in possible fabrication methods for applications and perspectives in any field, including nonlinear optics as well as sensing, photonics, new materials and photoinduced phenomena.

This Special Issue aims to gather contributes on advanced research in photorefractive effects and related light-driven phenomena on materials and relative applications. The focus will include the description of fundamental physics behind light–matter interaction as well as experimental and theoretical results. In an open-minded approach, it looks forward to stimulating cross-fertilization between different research areas dealing with the different light–matter interactions triggering photorefractivity but going far beyond it and exploring new ways to exploit these phenomena. This Special Issue is intended to be a collection boosting the synergy between photonics, processing and fabrication methods, material development, investigation techniques as well as relative applications including innovative approaches and advances.

In this Special Issue, original research articles, short communications/letters and reviews are welcome. Research areas may include (but are not limited to) the following:

  • Nonlinear light–matter interaction and applications: wave mixing, ultrafast processes, beam propagation dynamics, solitons, light beam interactions, frequency conversion (UV, VIS, IR, THz), optical limiting and modulation, self-organization and spatio-temporal dynamics, nonlinear plasmonics;
  • Photorefractive and hybrid materials: inorganic, organic and hybrid materials for photorefraction and nonlinear optics; crystals, liquid crystals, polymers, nonlinear fibers, gain media; organic semiconductors, perovskites;
  • Signal processing and photonics: integrated optical devices, all-optical signal processing, data storage, analog computing, electro-optics;
  • Materials micro- and nano-engineering: ferroelectric domain patterning, microfabrication techniques, waveguides, resonators, optofluidics, metasurfaces and metamaterials, thin films, quantum dots, diffraction gratings;
  • Holography, optical processing and imaging: dynamic wavefront sensing, image processing, 3D imaging and displays, holographic techniques, photon-correlation techniques, photoacoustics, spatial light modulation, adaptive optics;
  • Fundamentals and novel applications of charge and exciton generation and transport: microscopic modelling, self-localized charge states, bulk photovoltaic effect and photoferroelectrics, water splitting, photocatalysis, droplet manipulation; 
  • Optical analogues of complex phenomena: optical lattices, waveguide arrays, optical analogies of quantum effects and curved space-time phenomena, fundamental physics.

If you would like to contact the Guest Editors, please send an email to <pr22@dfa.unipd.it>. We look forward to receiving your contributions.

Dr. Annamaria Zaltron
Prof. Dr. Cinzia Sada
Dr. Marco Bazzan
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Photonics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • photorefractivity
  • holography
  • non-linear light–matter interaction
  • optical processing
  • integrated optical devices
  • photorefractive hybrid materials
  • materials micro- and nano-engineering

Published Papers (2 papers)

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Research

13 pages, 3085 KiB  
Article
Photoelectron Yield Spectroscopy and Transient Photocurrent Analysis for Triphenylamine-Based Photorefractive Polymer Composites
Photonics 2022, 9(12), 996; https://doi.org/10.3390/photonics9120996 - 17 Dec 2022
Viewed by 1128
Abstract
The photocurrent for poly(4-(dimethylamino)benzyl acrylate) (PDAA) photorefractive composites with (4-(diphenylamino)phenyl)methanol (TPAOH) photoconductive plasticizers was measured to be two orders of magnitude higher than that obtained with (2,4,6-trimethylphenyl)diphenylamine (TAA) photoconductive plasticizers. In this study, to determine the reason for the large difference in the [...] Read more.
The photocurrent for poly(4-(dimethylamino)benzyl acrylate) (PDAA) photorefractive composites with (4-(diphenylamino)phenyl)methanol (TPAOH) photoconductive plasticizers was measured to be two orders of magnitude higher than that obtained with (2,4,6-trimethylphenyl)diphenylamine (TAA) photoconductive plasticizers. In this study, to determine the reason for the large difference in the photocurrent measured for PDAA photorefractive composites containing two different photoconductive plasticizers of TPAOH and TAA, the highest occupied molecular orbital (HOMO) level identical to the ionization potential (Ip) and the width of the density of states (DOS) were evaluated using photoelectron yield spectroscopy, and the transient photocurrent was analyzed using a two-trap model. The estimated hole mobility was also rationalized using a Bässler formalism together with the energetic disorder of the width of the DOS and the positional disorder of the scattering situation for carrier hopping. Full article
(This article belongs to the Special Issue Photorefractive Photonics and Beyond)
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10 pages, 2493 KiB  
Communication
Vectorial Manipulation of High-Resolution Focusing Optical Field through a Scattering Medium
Photonics 2022, 9(10), 737; https://doi.org/10.3390/photonics9100737 - 08 Oct 2022
Cited by 1 | Viewed by 1084
Abstract
The manipulation of the polarization states of the light transmitted through a scattering medium has become an emerging field due to the novel fundamental physics interest and potential applications. Here, the manipulation of the polarization states in the focusing high-resolution optical field (points [...] Read more.
The manipulation of the polarization states of the light transmitted through a scattering medium has become an emerging field due to the novel fundamental physics interest and potential applications. Here, the manipulation of the polarization states in the focusing high-resolution optical field (points and vector beams) after passing a scattering medium is theoretically and experimentally demonstrated. The vector transmission matrix (VTM) of a scattering medium is measured with the vector basis of orthogonally circular polarizations by the two-dimensional (2D) holographic grating combined with the four-step phase-shifting method. The incident wavefronts for the creation of desired high-resolution optical fields through a scattering medium are modulated according to the calculation with the VTM of the medium. The theoretical and experimental results show that the constructed high-resolution optical field with spatially variant states of polarization can be realized through frosted glass. These results provide a new way to vectorially manipulate the constructed high-resolution optical field by passing through a scattering medium. Full article
(This article belongs to the Special Issue Photorefractive Photonics and Beyond)
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