Transition between different coherent light–matter interaction regimes analyzed by phase-resolved pulse propagation

2005 ◽  
Vol 30 (11) ◽  
pp. 1384 ◽  
Author(s):  
Tilman Höner zu Siederdissen ◽  
Nils C. Nielsen ◽  
Jürgen Kuhl ◽  
Martin Schaarschmidt ◽  
Jens Förstner ◽  
...  
Keyword(s):  
Pulse Propagation ◽  
Coherent Light ◽  
Matter Interaction ◽  
Light Matter Interaction

Pulse shape analysis resolves room temperature coherent light-matter interaction in quantum dots

2013 ◽  
Author(s):  
Mirco Kolarczik ◽  
Nina Owschimikow ◽  
Yücel I. Kaptan ◽  
Ulrike Woggon ◽  
Julian Korn ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Shape Analysis ◽  
Pulse Shape ◽  
Room Temperature ◽  
Coherent Light ◽  
Pulse Shape Analysis ◽  
Matter Interaction ◽  
Light Matter Interaction

scholarly journals Femtosecond Laser Induced Luminescence in Hierarchically Structured Nd3+,Yb3+,Er3+ Co-Doped Upconversion Nanoparticles: Light-Matter Interaction Mechanisms from Experiments and Simulations

2020 ◽  
Author(s):  
Guilherme Oliveira ◽  
Flávia Ferreira ◽  
Guilherme Ferbonink ◽  
Marcos Belançon ◽  
Fernando Sigoli ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Pulse Propagation ◽  
Dynamic Range ◽  
Classical Model ◽  
Basic Knowledge ◽  
Intensity Dependence ◽  
Broad Dynamic Range ◽  
Matter Interaction ◽  
Light Matter Interaction ◽  
Co Doped

Fundamental studies of light-matter interactions are important for basic knowledge and in applications. Thanks to advances in experimental and theoretical methods, nowadays it is possible to perform such studies in a broad dynamic range, covering timescales from that of elementary interactions to real time. In the present work, we perform an experimental-theoretical study of light intensity-dependent femtosecond and CW-laser induced frequency upconversion in hierarchically structured core-multishell nanoparticles co-doped with Nd<sup>III</sup>, Yb<sup>III</sup>, and Er<sup>III</sup>. Upconversion spectra recorded with CW and femtosecond excitation are qualitatively similar whereas the intensity dependence of upconversion depends on excitation mode (CW or femtosecond). To further assess the observed intensity dependence, we perform light-matter interaction simulations in the dynamic range from 100 fs to 3 ms for 18-level system describing the UCNPs, including 9 Nd<sup>III</sup> levels, 2 Yb<sup>III</sup>, and 7 Er<sup>III</sup> levels and a classical model for the excitation source. The calculated time- and intensity-dependent energy level population are compared with measured spectra to understand CW vs femtosecond laser-induced upconversion. To further discuss the differences between CW and femtosecond laser-induced light-matter interactions for the systems studied here, we perform semi-classical pulse propagation simulations and ultrafast pump-probe measurements to study how the light source bandwidth, relative to the absorption linewidth, influence light absorption and transmission and further connect these results with the intensity dependence. Overall, we report our progress toward mechanistic studies of light-matter interaction and photophysical pathways following femtosecond excitation and UCNPs.

scholarly journals Femtosecond Laser Induced Luminescence in Hierarchically Structured Nd3+,Yb3+,Er3+ Co-Doped Upconversion Nanoparticles: Light-Matter Interaction Mechanisms from Experiments and Simulations

2020 ◽  
Author(s):  
Guilherme Oliveira ◽  
Flávia Ferreira ◽  
Guilherme Ferbonink ◽  
Marcos Belançon ◽  
Fernando Sigoli ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Pulse Propagation ◽  
Dynamic Range ◽  
Classical Model ◽  
Basic Knowledge ◽  
Intensity Dependence ◽  
Broad Dynamic Range ◽  
Matter Interaction ◽  
Light Matter Interaction ◽  
Co Doped

Fundamental studies of light-matter interactions are important for basic knowledge and in applications. Thanks to advances in experimental and theoretical methods, nowadays it is possible to perform such studies in a broad dynamic range, covering timescales from that of elementary interactions to real time. In the present work, we perform an experimental-theoretical study of light intensity-dependent femtosecond and CW-laser induced frequency upconversion in hierarchically structured core-multishell nanoparticles co-doped with Nd<sup>III</sup>, Yb<sup>III</sup>, and Er<sup>III</sup>. Upconversion spectra recorded with CW and femtosecond excitation are qualitatively similar whereas the intensity dependence of upconversion depends on excitation mode (CW or femtosecond). To further assess the observed intensity dependence, we perform light-matter interaction simulations in the dynamic range from 100 fs to 3 ms for 18-level system describing the UCNPs, including 9 Nd<sup>III</sup> levels, 2 Yb<sup>III</sup>, and 7 Er<sup>III</sup> levels and a classical model for the excitation source. The calculated time- and intensity-dependent energy level population are compared with measured spectra to understand CW vs femtosecond laser-induced upconversion. To further discuss the differences between CW and femtosecond laser-induced light-matter interactions for the systems studied here, we perform semi-classical pulse propagation simulations and ultrafast pump-probe measurements to study how the light source bandwidth, relative to the absorption linewidth, influence light absorption and transmission and further connect these results with the intensity dependence. Overall, we report our progress toward mechanistic studies of light-matter interaction and photophysical pathways following femtosecond excitation and UCNPs.

Phase-resolved nonlinear propagation: Transition between coherent light-matter interaction regimes

2005 ◽  
Author(s):  
Tilman Höner zu Siederdissen ◽  
Nils C. Nielsen ◽  
Jürgen Kuhl ◽  
Galina Khitrova ◽  
Hyatt M. Gibbs ◽  
...  
Keyword(s):  
Nonlinear Propagation ◽  
Coherent Light ◽  
Matter Interaction ◽  
Light Matter Interaction

Quantum description of light–matter coupling

2017 ◽  
Author(s):  
Alexey V. Kavokin ◽  
Jeremy J. Baumberg ◽  
Guillaume Malpuech ◽  
Fabrice P. Laussy
Keyword(s):  
Cavity Mode ◽  
Optical Field ◽  
Level System ◽  
Bloch Equations ◽  
Optical Bloch Equations ◽  
Matter Coupling ◽  
Matter Interaction ◽  
Light Matter Interaction ◽  
Full Quantum ◽  
The Ideal

In this chapter we study with the tools developed in Chapter 3 the basic models that are the foundations of light–matter interaction. We start with Rabi dynamics, then consider the optical Bloch equations that add phenomenologically the lifetime of the populations. As decay and pumping are often important, we cover the Lindblad form, a correct, simple and powerful way to describe various dissipation mechanisms. Then we go to a full quantum picture, quantizing also the optical field. We first investigate the simpler coupling of bosons and then culminate with the Jaynes–Cummings model and its solution to the quantum interaction of a two-level system with a cavity mode. Finally, we investigate a broader family of models where the material excitation operators differ from the ideal limits of a Bose and a Fermi field.

scholarly journals Surface plasmon polariton–enhanced photoluminescence of monolayer MoS2 on suspended periodic metallic structures

Nanophotonics ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 975-982
Author(s):  
Huanhuan Su ◽  
Shan Wu ◽  
Yuhan Yang ◽  
Qing Leng ◽  
Lei Huang ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polariton ◽  
Plasmonic Nanostructures ◽  
Metallic Nanoparticle ◽  
Systematic Analysis ◽  
Excitation Rate ◽  
Matter Interaction ◽  
Light Matter Interaction ◽  
Plasmon Polariton ◽  
Plasmonic Effects

AbstractPlasmonic nanostructures have garnered tremendous interest in enhanced light–matter interaction because of their unique capability of extreme field confinement in nanoscale, especially beneficial for boosting the photoluminescence (PL) signals of weak light–matter interaction materials such as transition metal dichalcogenides atomic crystals. Here we report the surface plasmon polariton (SPP)-assisted PL enhancement of MoS2 monolayer via a suspended periodic metallic (SPM) structure. Without involving metallic nanoparticle–based plasmonic geometries, the SPM structure can enable more than two orders of magnitude PL enhancement. Systematic analysis unravels the underlying physics of the pronounced enhancement to two primary plasmonic effects: concentrated local field of SPP enabled excitation rate increment (45.2) as well as the quantum yield amplification (5.4 times) by the SPM nanostructure, overwhelming most of the nanoparticle-based geometries reported thus far. Our results provide a powerful way to boost two-dimensional exciton emission by plasmonic effects which may shed light on the on-chip photonic integration of 2D materials.

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