Emerging Trends in Photonic Crystals

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "Optoelectronics and Optical Materials".

Deadline for manuscript submissions: 20 September 2024 | Viewed by 702

Special Issue Editor


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Guest Editor
School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, China
Interests: photonic crystals; chemical and biosensors; optical sensors; smart materials; wearable devices
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Over the last three decades, photonic crystals (PhCs) have garnered significant interest due to their broad applicative potential in optics and photonics. Generally, these structures can be fabricated via either “top-down” lithographic or “bottom-up” self-assembly approaches. These self-assembly approaches have attracted particular attention due to their low cost, simple fabrication processes, relative convenience regarding scalability, and the ease of creating complex structures with nanometer precision. Self-assembled colloidal crystals (CCs), which are good candidates for PhCs, have offered unprecedented opportunities for photonics, optics, optoelectronics, sensing, energy harvesting, environmental remediation, pigments, display, LED, biomedical engineering and many other applications. The emerging application of CCs and unique photonic structures is enabled by advanced self-assembly methods.

In this Special Issue, we would like to focus on the emerging trends in PhCs. These include, but are not limited to, the simulation of novel photonic crystal structures, new approaches to the fabrication of PhCs, and the wide novel application of these PhCs.

Prof. Dr. Zhongyu Cai
Guest Editor

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Keywords

  • photonic crystals
  • self-assembly
  • sensing
  • display
  • biomedical engineering
  • energy harvesting

Published Papers (1 paper)

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Research

8 pages, 3374 KiB  
Communication
Cascaded Third-Harmonic Generation in Optically Induced 3D Nonlinear Photonic Crystals
by Tianxiang Xu, Sen Wang, Jing Zeng, Dawei Liu, Ruwei Zhao, Yuming Yao, Yuhao Zhao, Hui Zhao, Tiefeng Xu and Yan Sheng
Photonics 2024, 11(4), 313; https://doi.org/10.3390/photonics11040313 - 28 Mar 2024
Viewed by 538
Abstract
Nonlinear photonic crystals with 3D orthorhombic lattice structures were fabricated using the femtosecond laser-poling technique in ferroelectric Sr0.28Ba0.72Nb2O6 (SBN) crystals. The crystals were used to demonstrate the possibility of generating cascaded third-harmonic waves in optically poled [...] Read more.
Nonlinear photonic crystals with 3D orthorhombic lattice structures were fabricated using the femtosecond laser-poling technique in ferroelectric Sr0.28Ba0.72Nb2O6 (SBN) crystals. The crystals were used to demonstrate the possibility of generating cascaded third-harmonic waves in optically poled ferroelectric structures. The spectral response and conversion efficiency of the third-harmonic process were experimentally investigated. While the nonlinear cascading processes can be commonly realized in electric-field-poled ferroelectric crystals, their generation in optically poled ferroelectric domain structures have not been reported elsewhere. In addition to the fully phase-matched nonlinear interaction, Cherenkov-type third-harmonic generation that fulfills the longitudinal phase-matching condition was also experimentally studied. Our study contributes to exploring the full potential of optically induced nonlinear photonic crystals and provides a new choice of materials for third-harmonic generation. Full article
(This article belongs to the Special Issue Emerging Trends in Photonic Crystals)
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