Lattice plasmon cavity modes combined with optical gain can exhibit directional and tunable lasing emission at room temperature. However, the mechanistic details governing the dynamics before lasing action are not understood. This paper describes how the long photon lifetimes of lattice plasmon modes can be correlated with the ultrafast dynamics of lasing action and amplified spontaneous emission. Lasing from band-edge plasmons and amplified spontaneous emission from propagating plasmons showed rise times on the order of tens of picoseconds, during which inverted population in the gain was first generated and then followed by energy transfer to the lattice plasmon cavity for enhanced light emission.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.jpclett.9b01076 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Enhanced Thermoelectric Performance in Earth-Abundant BiS by Band Structure Modification Using CuCl Doping.
Small
March 2025
Plasmonics and Perovskites Laboratory, Dept. of Materials Science and Engineering, IIT Kanpur, Kanpur, Uttar Pradesh, 208016, India.
Bismuth sulfide has garnered considerable attention in recent years for thermoelectric applications because it comprises of earth-abundant, low-cost sulfur. However, it has a large bandgap causing low electrical conductivity compared to other chalcogenides, limiting its thermoelectric performance. In the present work, using a small concentration of CuCl doping, 9-times ZT-enhancement is demonstrated in BiS attaining a maximum ZT≈1.
View Article and Find Full Text PDFStrong Chiro-Optical Activity of Plasmonic Metasurfaces with Inverted Pyramid Arrays.
ACS Appl Mater Interfaces
March 2025
Institute of Materials Science of Barcelona, ICMAB-CSIC, Campus de la UAB, 08193 Bellaterra, Catalonia, Spain.
Chiral plasmonics has emerged as a powerful tool for manipulating light at the nanoscale with unprecedented control over light polarization. The advances in nanofabrication have led to the creation of nanostructures that support strong chiroptical responses. However, the complexity of the fabrication and the associated high costs remain major challenges in upscaling these architectures.
View Article and Find Full Text PDFAccessing Beyond-Light Line Dispersion and High- Resonances of Dense Plasmon Lattices by Bandfolding.
ACS Photonics
February 2025
Department of Physics of Information in Matter and Center for Nanophotonics, NWO-I Institute AMOLF, Science Park 104, NL1098XG Amsterdam, The Netherlands.
Dense plasmon lattices are promising as experimentally accessible implementations of seminal tight-binding Hamiltonians, but the plasmonic dispersion of interest lies far beyond the light line and is thereby inaccessible in far-field optical experiments. In this work, we make the guided mode dispersion of dense hexagonal plasmon antenna lattices visible by bandfolding induced by perturbative scatterer size modulations that introduce supercell periodicity. We present fluorescence enhancement experiments and reciprocity-based T-matrix simulations for a systematic variation of perturbation strength.
View Article and Find Full Text PDFAmorphous/Crystalline Interface of Bi/BiNbOCl Heterostructure for Improved Piezo-Photocatalysis.
Small
February 2025
Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, P. R. China.
Efficient separation of photogenerated charges at the surface of photocatalysts is vital for achieving high photocatalytic activity. Here, a Bi/BiNbOCl heterostructure piezo-photocatalyst with an amorphous/crystalline interface (acBi/BNC) is prepared by in situ reduction using BiNbOCl as a self-sacrificial template. This ingenious design synergistically utilizes the advantages of the amorphous/crystalline interface structure, localized surface plasmon resonance effect, and piezoelectric field.
View Article and Find Full Text PDFScalable Manufacturing of Low-Symmetry Plasmonic Nanospindle Arrays with Tunable Surface Lattice Resonance.
ACS Nano
February 2025
State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, 200433 Shanghai, China.
Geometry-dependent plasmonic surface lattice resonances (SLRs) have garnered great interest across a range of applications, including nanolasers, sensors, photocatalysis, and nonlinear optics. However, the rational fabrication of high-quality, low-symmetry, plasmonic nanoparticle arrays over large areas remains challenging. Herein, we report a versatile strategy for the scalable fabrication of centimeter-scale plasmonic nanospindle (NS) arrays with high positional and orientational precision.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!