Second harmonic generation from metal nanoparticle dimer: an analytical approach in dipole approximation

Kheirandish, Asef; Javan, N. Sepehri; Mohammadzadeh, Hosein

doi:10.1088/1402-4896/abd27d

Cited by 3 publications

(3 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where parameter α = 3ε n /(2ε h + ε n ) determines the variation of macroscopic electric field inside the NP, ε h and ε n are the permittivity of surrounding medium and an individual NP, respectively (reader for detailed discussion can refer to [23]).…”

Section: The Permittivitymentioning

confidence: 99%

“…Such a primitive model is commonly used for the cases in which the particles are not very close to each other and their characteristic dimension is very less than the incident light wavelength. In some recent studies, by such a manner, we could theoretically extract some linear and nonlinear aspects of 1-D chains of MNPs [21][22][23][24]. In the linear regime, the measurable parameter which is a complicated function of the permittivity is the extinction cross section of particles which indicates the absorption and scattering of light, thus, we calculate it for an MNP of array.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Linear optical properties of 2d assembly of interacting gold nanoparticles: analytical approach in dipole approximation

Kheirandish¹,

Javan²,

Farhoomand³

et al. 2021

Phys. Scr.

Self Cite

View full text Add to dashboard Cite

Using a Drude-like model for the conduction electrons of Metal Nanoparticles (MNPs) assembled in a periodic two-dimensional (2D) array, considering dipole-dipole interactions of adjacent particles, an analytical expression is achieved for the MNP permittivity where the functionality of interaction term on the different geometric and physical parameters is evident. A numerical analysis is carried out for a gold NP array for two different sizes of NPs and two different host media of water and glass. It is shown that, interaction of NPs leads to a substantial increase in the extinction cross section, the red-shift of the Surface Plasmon Resonance (SPR) wavelength and decrease in the full width at half maximum (FWHM) of cross section. The absolute values of the real and imaginary parts of complex permittivity of each MNP decrease in comparison with the single particle case.

show abstract

Section: The Permittivitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Linear optical properties of 2d assembly of interacting gold nanoparticles: analytical approach in dipole approximation

Kheirandish¹,

Javan²,

Farhoomand³

et al. 2021

Phys. Scr.

Self Cite

View full text Add to dashboard Cite

show abstract

“…In the dipole approximation, some analytical formulae are obtained for linear optical parameters. In some recent works, we have used similar approach in order to determine the linear and non-linear properties of MNP dimer [32,33] and we have shown that the polarization of incident laser beam has an essential role in the optical aspects of NPs. Here, polarization plays an important role as well and for three different configurations of trimer which can be formed by considering orientation of EM fields and wave vector with respect to the symmetry axis of the trimer, we study the linear properties of each NP.…”

Section: Introductionmentioning

confidence: 99%

Analytical study of linear optical properties of metal nanoparticle trimers: the impact of dipole-dipole interaction on different modes of configuration

Farhoomand,

Sepehri Javan,

Kheirandish

2024

Phys. Scr.

View full text Add to dashboard Cite

In this study, we theoretically investigate the linear properties of a metal nanoparticle (MNP) trimer. Three identical spherical nanoparticles (NPs) whose centers are equidistantly oriented on a same straight line are considered. Using the solid core approximation for NPs and considering interaction between particles through induced electric dipoles, the motion equation of each NP conduction electrons is analytically solved. Some appropriately approximated expressions are derived for the permittivity of each NP based on a Drude-like model, allowing the clear observation of the contribution of inter-particle interaction. Depending on the orientation of the trimer axis and incident laser beam geometry (i.e., orientation of electromagnetic (EM) fields and wave vector of laser beam), three different configurations or modes are considered. The extinction efficiency of each NP as a function of wavelength is plotted, revealing that when the laser electric field is perpendicular to the symmetry axis of the trimer, it increases compared to the case of non-interactional single NP, and its plasmon resonance peak experiences a red shift. For other cases where the electric field of the laser beam is parallel to the trimer axis, the extinction efficiency of each NP decreases, and its peak shifts to the blue. In all cases, the effect of interaction on the optical properties of the middle NP is greater than on the other NPs.

show abstract

Surface plasmon mediated harmonically resonant effects on third harmonic generation from Au and CuS nanoparticle films

et al. 2023

View full text Add to dashboard Cite

A growing class of nonlinear materials employ the localized surface plasmonic resonance (LSPR) of nanoparticles to enhance harmonic generation. Material systems containing harmonically coupled metallic and semiconductor plasmonic nanoparticles have been shown to further increase performance. Here, we explore the effect of dual plasmonic interactions in bilayer CuS and Au nanoparticle films on third harmonic generation (THG). Detuning the CuS LSPR away from the excitation frequency changes the dominant upconversion pathway from THG to multiple photon photoluminescence (MPPL). Changing the size of the Au nanoparticle red shifts the LSPR from the second harmonic of the pump frequency and also eliminates the enhancement effect. When both LSPRs satisfy the harmonic condition, simultaneous excitation of CuS-Au nanoparticle films at the resonant frequency of each nanoparticle species enhances the generation of third harmonic light by sum-frequency generation, suggesting that the enhancement of THG in dually plasmonic nanoparticle films is the result of a cascaded nonlinear mechanism. An analytic model of the interaction between the plasmonic nanoparticles due to incoherent dipolar interactions is also presented. Understanding these processes opens a pathway for developing ultrafast, high-efficiency upconversion thin-film devices by clarifying the conditions that efficiently produce third harmonic generation without background MPPL or additional harmonics.

show abstract

Second harmonic generation from metal nanoparticle dimer: an analytical approach in dipole approximation

Cited by 3 publications

References 58 publications

Linear optical properties of 2d assembly of interacting gold nanoparticles: analytical approach in dipole approximation

Linear optical properties of 2d assembly of interacting gold nanoparticles: analytical approach in dipole approximation

Analytical study of linear optical properties of metal nanoparticle trimers: the impact of dipole-dipole interaction on different modes of configuration

Surface plasmon mediated harmonically resonant effects on third harmonic generation from Au and CuS nanoparticle films

Contact Info

Product

Resources

About