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Photonics
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Optoelectronics
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Optoelectronics

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "Optical Interaction Science".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 4548

Special Issue Editors

Dr. Alberto Tibaldi

E-Mail Website
Guest Editor
Politecnico di Torino, Torino, Italy
Interests: computational electromagnetics and electronics; optoelectronic devices; VCSELs
Prof. Dr. Francesco Bertazzi

E-Mail Website
Guest Editor
Politecnico di Torino, Torino, Italy
Interests: modeling of electronic and optoelectronic devices

Special Issue Information

Dear Colleagues,

Empowered by novel device concepts and nanostructured material systems, optoelectronics has enabled groundbreaking innovations in diverse fields such as ICTs, automotive, energy production, and biomedical research. This Special Issue is intended to highlight recent advances in semiconductor optoelectronic devices, with attention to both theory and applications. Topics covered include but are not limited to:

- Physics of optoelectronic devices: electronic structure, carrier transport, light–matter interaction, absorption, and gain properties;

- High-speed dynamics in light emitters and modulators;

- Nonlinear optics: frequency-mixing processes, Pockels, Kerr, and acousto-optic effects;

- Noise in optoelectronic devices;

- Quantum kinetic models of nanostructures: nonequilibrium Green’s functions and density matrix;

- Multiphysics semiclassical models of optoelectronic devices coupling drift–diffusion, optical and thermal solver;

- Visible and UV light emitters;

- Superlattice infrared photodetectors;

- Quantum cascade lasers;

- Solar cells: intermediate band, hot carrier effects, nanotextures, novel materials;

- Novel devices: wavelength-tunable VCSELs, photonic crystal lasers.

Dr. Alberto Tibaldi
Prof. Dr. Francesco Bertazzi
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

  • Light-matter interaction
  • High-speed optoelectronic devices
  • Quantum-kinetic transport models
  • Multiscale and multiphysics models
  • Visible and UV light emitters
  • Photodetectors Solar cells
  • Noise
  • Nonlinear optics

Published Papers (2 papers)

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Research

18 pages, 3184 KiB  
Article
Variable Repetition Rate Picosecond Master Oscillator for Photoelectron Gun
by Mikhail V. Gorbunkov, Yulia Y. Maslova, Yurii V. Shabalin and Vladimir G. Tunkin
Photonics 2022, 9(2), 106; https://doi.org/10.3390/photonics9020106 - 13 Feb 2022
Viewed by 1624
Abstract
In this work, aiming at the master oscillator of the photoelectron gun with a variable repetition rate of electron bunches, a picosecond solid-state laser subject to delayed optoelectronic feedback and RF loss modulation is studied. Loss modulation is performed using an electro-optical modulator [...] Read more.
In this work, aiming at the master oscillator of the photoelectron gun with a variable repetition rate of electron bunches, a picosecond solid-state laser subject to delayed optoelectronic feedback and RF loss modulation is studied. Loss modulation is performed using an electro-optical modulator with zero bias at the second accelerator frequency subharmonic. Optoelectronic negative feedback uses an intracavity electro-optical modulator and a fast high-voltage photodiode mounted as close as possible to the modulator crystal. An analytical formula is obtained for the pulse duration, and estimates are given for Nd and Yb based media and L, S, C and X-band used in modern linear accelerators. Numerical simulation proves that the control is suitable for pulse-repetitive operation. The proposed approach solves the problem of laser pulse shortening and locking the master oscillator, and therefore, electron bunches in photoelectron guns, to the high-stable RF generator controlling accelerator functioning. Full article
(This article belongs to the Special Issue Optoelectronics)
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14 pages, 3746 KiB  
Article
Proposal of a Cascade Photonic Crystal XOR Logic Gate for Optical Integrated Circuits with Investigation of Fabrication Error and Optical Power Changes
by Ahmad Mohebzadeh-Bahabady and Saeed Olyaee
Photonics 2021, 8(9), 392; https://doi.org/10.3390/photonics8090392 - 14 Sep 2021
Cited by 8 | Viewed by 2203
Abstract
A compact and simple structure is designed to create an all-optical XOR logic gate using a two-dimensional, photonic crystal lattice. The structure was implemented using three waveguides connected by two nano-resonators. The plane wave expansion method was used to obtain the photonic band [...] Read more.
A compact and simple structure is designed to create an all-optical XOR logic gate using a two-dimensional, photonic crystal lattice. The structure was implemented using three waveguides connected by two nano-resonators. The plane wave expansion method was used to obtain the photonic band gap and the finite-difference time-domain method was used to investigate the behavior of the electromagnetic field in the photonic crystal structure. Examining the high contrast ratio and high-speed cascade, all-optical XOR on a chip, the effects of fabrication error and the changes in the input optical power showed that the structure could be used in optical integrated circuits. The contrast ratio and data transfer rate of the cascade XOR logic gate were respectively obtained as 44.29 dB and 1.5 Tb/s. In addition, the designed structure had very small dimensions at 158.65 μm2 and required very low power to operate, which made it suitable for low-power circuits. This structure could also be used as a NOT logic gate. Therefore, an XNOR logic gate can be designed using XOR and NOT logic gates. Full article
(This article belongs to the Special Issue Optoelectronics)
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