Nonlinear Photonic Crystals: Advances in Fabrication and Applications

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Crystal Engineering".

Deadline for manuscript submissions: closed (10 December 2021) | Viewed by 3411

Special Issue Editors

Laser Physics Center, Research School of Physics, Australian National University, Canberra ACT 2601, Australia
Interests: nonlinear optics; ferroelectrics; ultrafast laser technology

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Guest Editor
Nonlinear and Quantum Photonics group, Department of Applied Physics, KTH Royal Institute of Technology, Roslagstullsbacken 21, SE-106 91 Stockholm, Sweden
Interests: ferroelectrics; photonics; nonlinear optics; integrated quantum optics

Special Issue Information

Dear Colleagues,

Nonlinear photonic crystals are transparent materials having a space-dependent (often periodic) second-order nonlinear optical response. This nonlinear modulation offers a controllable way to synchronize relative phases among optical waves at different frequencies, an essential condition for obtaining efficient nonlinear optical interactions. The nonlinear photonic crystals have been extremely used for nonlinear optics study and in applications that require new light sources, including the nonlinear generation quantum-entangled photons and their control. The importance of nonlinear photonic crystals has also inspired extensive research in ferroelectrics, particularly in ferroelectric domain engineering at the micron or sub-micron scale.

We invite researchers to contribute to this Special Issue on Nonlinear Photonic Crystals: Advances in Fabrication and Applications, which is intended to serve as a multidisciplinary forum covering broad aspects of science and technology related to the fabrication, characterization, fundamental study, and applications of nonlinear photonic crystals.

The potential topics include, but are not limited to:

  • Ferroelectric domain engineering;
  • Ferroelectric domain wall motion, control, and domain-wall-based effects and devices;
  • Characterization of ferroelectric domain structures;
  • Advanced structure design of nonlinear photonic crystal;
  • Nonlinear wavefront shaping;
  • Entangled photons generation and control.

Dr. Yan Sheng
Prof. Katia Gallo
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. Crystals 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 2600 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

  • Nonlinear photonic crystals
  • Ferroelectric domain engineering
  • Quasi-phase matching
  • Optical frequency conversion
  • Spontaneous parametric down-conversion
  • Entangled photons

Published Papers (1 paper)

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Research

11 pages, 1966 KiB  
Article
Investigation of 1064-nm Pumped Type II SPDC in Potassium Niobate for Generation of High Spectral Purity Photon Pairs
by Donghwa Lee, Ilhwan Kim and Kwang Jo Lee
Crystals 2021, 11(6), 599; https://0-doi-org.brum.beds.ac.uk/10.3390/cryst11060599 - 26 May 2021
Cited by 5 | Viewed by 2851
Abstract
The generation and detection of nonclassical light of about 2 μm has good potential in an emerging field of high-sensitivity metrology, especially gravitational wave detection, as well as free-space quantum communication. A pair of photons is generated through a spontaneous parametric down-conversion (SPDC) [...] Read more.
The generation and detection of nonclassical light of about 2 μm has good potential in an emerging field of high-sensitivity metrology, especially gravitational wave detection, as well as free-space quantum communication. A pair of photons is generated through a spontaneous parametric down-conversion (SPDC) process in a nonlinear optic crystal, which can be properly entangled in a spatial region where two beams with each polarization overlap or in a Sagnac-loop interferometer configuration. We investigated theoretically and numerically Type II SPDC in a potassium niobate (KNbO3, KN) crystal, which is useful as a material platform for generating photon pairs of high spectral purity in the 2-μm range. The technique is based on the frequency degenerate SPDC under Type II extended phase matching (EPM). We described the EPM characteristics of KN and showed that it is practically feasible for a 1064-nm pumped SPDC under moderate temperature conditions. The effective nonlinear optic coefficient of KN is at least four-times larger than those of other crystals using the Type II EPM approach, which implies a significant improvement in SPDC efficiency. The joint spectral analysis showed that a pair of photons can be generated with a high purity of 0.995 through proper pump filtering. Full article
(This article belongs to the Special Issue Nonlinear Photonic Crystals: Advances in Fabrication and Applications)
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