Enhancement of four-wave mixing via interference of multiple plasmonic conversion paths

Singh, Shailendra Kumar; Abak, Musa Kurtulus; Tașgın, Mehmet Emre

doi:10.1103/physrevb.93.035410

Cited by 38 publications

(26 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Interpretation of why enhancement and suppression take place in second harmonic field can be done by examining the denominator of the Eq. (11). Here, we demonstrate how second harmonic field can be enhanced without any modification in the linear response,α 1 .…”

Section: 2mentioning

confidence: 65%

See 1 more Smart Citation

Controlling steady-state second harmonic signal via linear and nonlinear Fano resonances

Günay

Artvin

Bek

et al. 2018

Journal of Modern Optics

Self Cite

View full text Add to dashboard Cite

Nonlinear signal even from a single molecule becomes visible at hot spots of plasmonic nanoparticles. In these structures, Fano resonances can control the nonlinear response in two ways. (i) A linear Fano resonance can enhance the hot spot field, resulting enhanced nonlinear signal. (ii) A nonlinear Fano resonance can enhance the nonlinear signal without enhancing the hot spot. In this study, we compare the enhancement of second harmonic signal at the steady-state obtained via these two methods. Since we are interested in the steady-state signal, we adapt a linear enhancement which works at the steady-state. This is different than the dark-hot resonances that appears in the transparency window due to enhanced plasmon lifetime.

show abstract

Section: 2mentioning

confidence: 65%

“…We examine the denominator of the last term in the denominator of the Eq. (11). When a QE level spacing is chosen close to the second harmonic frequency ω eg ≈ 2ω, the last term becomes f 2 2 y/γ eg .…”

Section: 2mentioning

confidence: 99%

Controlling steady-state second harmonic signal via linear and nonlinear Fano resonances

Günay

Artvin

Bek

et al. 2018

Journal of Modern Optics

Self Cite

View full text Add to dashboard Cite

show abstract

“…In Ref. [29], we show that presence of an extra molecule can also help to (partially) cancel the γ 2 term in the denominator which cannot be performed using a single molecule. However, this complicated situation is out of the scope of this paper.…”

Section: B Demonstration Of the Path Interference Effectsmentioning

confidence: 99%

“…In our theoretical and numerical studies using 3D simulations with retardation effects [23,26,28,29], we have demonstrated that path interference schemes can be adopted to gain control over the nonlinear frequency conversion processes emerging in plasmonic resonators. By appropriately choosing the level spacing of the quantum oscillator (i.e.…”

Section: Introductionmentioning

confidence: 99%

“…Recent studies [26][27][28] reveal that Fano resonances of coupled plasmonic-quantum systems can also enhance the SHG and four-wave mixing [29] processes. In our theoretical and numerical studies using 3D simulations with retardation effects [23,26,28,29], we have demonstrated that path interference schemes can be adopted to gain control over the nonlinear frequency conversion processes emerging in plasmonic resonators.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fluorescence excitation by enhanced plasmon upconversion under continuous wave illumination

Tașgın

Salakhutdinov

Kendziora

et al. 2016

Photonics and Nanostructures - Fundamentals and Applications

Self Cite

View full text Add to dashboard Cite

We demonstrate effective background-free continuous wave nonlinear optical excitation of molecules that are sandwiched between asymmetrically constructed plasmonic gold nanoparticle clusters. We observe that near infrared photons are converted to visible photons through efficient plasmonic second harmonic generation. Our theoretical model and simulations demonstrate that Fano resonances may be responsible for being able to observe nonlinear conversion using a continuous wave light source. We show that nonlinearity enhancement of plasmonic nanostructures via coupled quantum mechanical oscillators such as molecules can be several orders larger as compared to their classical counterparts.

show abstract

Spatially Structured Optical Effects in a Four‐Level Quantum System Near a Plasmonic Nanostructure

2021

View full text Add to dashboard Cite

The light–matter interaction for a four‐level double‐V‐type quantum system interacting with a pair of weak probe fields while located near a 2D array of metal‐coated dielectric nanospheres is studied. A situation is considered in which one of the probe field carries an optical vortex, that is, an electromagnetic field with optical angular momentum, and the other probe field has no vortex. It is demonstrated that due to the phase sensitivity of the closed‐loop double V‐type quantum system, the linear and nonlinear susceptibility of the non‐vortex probe beam depends on the azimuthal angle and orbital angular momentum (OAM) of the vortex probe beam. This feature is missing in an open four‐level double V‐type quantum system interacting with free‐space vacuum, as no quantum interference occurs in this case. The azimuthal dependence of optical susceptibility of the quantum system is used to determine the regions of spatially structured transparency.

show abstract

Enhancement of four-wave mixing via interference of multiple plasmonic conversion paths

Cited by 38 publications

References 52 publications

Controlling steady-state second harmonic signal via linear and nonlinear Fano resonances

Controlling steady-state second harmonic signal via linear and nonlinear Fano resonances

Fluorescence excitation by enhanced plasmon upconversion under continuous wave illumination

Spatially Structured Optical Effects in a Four‐Level Quantum System Near a Plasmonic Nanostructure

Contact Info

Product

Resources

About