Spin-lasers with periodic gratings: Toward ultrafast polarization modulation

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F22%3A10251724" target="_blank" >RIV/61989100:27360/22:10251724 - isvavai.cz</a>

Alternative codes found

RIV/61989100:27640/22:10251724 RIV/61989100:27740/22:10251724

Result on the web

<a href="https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12502/2664204/Spin-lasers-with-periodic-gratings-toward-ultrafast-polarization-modulation/10.1117/12.2664204.short" target="_blank" >https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12502/2664204/Spin-lasers-with-periodic-gratings-toward-ultrafast-polarization-modulation/10.1117/12.2664204.short</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2664204" target="_blank" >10.1117/12.2664204</a>

Result language

angličtina

Original language name

Spin-lasers with periodic gratings: Toward ultrafast polarization modulation

Original language description

The main goal of this study is to explore possibilities of using cavities with dielectric or semiconductor grating as a main building block of spin-injected vertical-cavity surface-emitting lasers (spin-VCSELs) for ultrafast data transfer up to hundreds of Gb/s. Spin-VCSELs allow direct control of emitted polarization by means of electron spin injection. Compared to intensity-modulated VCSELs, the information is encoded into polarization state of light. Shorter response time is offered as a result of introducing anisotropy, in this case via periodic grating, which couples circularly-polarized photons, emitted in spin-polarized quantum wells. Precise modeling of the lasing regime is essential and based upon theory developed in our previous work. Eigenmodes of cavity with periodic structures are extracted using effective medium theory implemented in the transfer matrix formalism. Mathematical tools allow us to calculate optimal parameters of birefringent grating and consequently to design the cavities with required functionality. Particular focus is put on calculation of photon lifetimes, generalized confinement factors and frequencies of eigenmodes, which are necessary for studying dynamical performance of grating-based spin-VCSELs. According to the numerical model, desired gratings and grating-based cavities can be fabricated using PVD deposition of dielectric material sophisticated by lithographic techniques along with sample etching. (C) 2022 SPIE.

Czech name

—

Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

10300 - Physical sciences

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of SPIE - The International Society for Optical Engineering. Volume 12502

ISBN

978-1-5106-6111-0

ISSN

0277-786X

e-ISSN

1996-756X

Number of pages

5

Pages from-to

—

Publisher name

SPIE - The International Society for Optical Engineering

Place of publication

Bellingham

Event location

Wojanów

Event date

Sep 6, 2022

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000920988700015