Efficient surface plasmon amplification from gain-assisted gold nanorods

Liu, Si-Yun; Li, Jiafang; Zhou, Fei; Gan, Lin; Li, Zhiyuan

doi:10.1364/ol.36.001296

Cited by 95 publications

(98 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in an experimental result by Noginov and co-workers, a spaser particle with a gold core and a dye-doped silica shell based on a dipolar mode could be reduced to the scale of tens of nanometers [5]. So far, nanoparticle-based spasers comprising gain-assisted metal nanospheres [5], nanorods [7], nanoshells [8,9], nanorings [10], and cubic nanoboxes [11] have been demonstrated theoretically and experimentally. In most of their research, the dipole-like mode is used to realize the spaser.…”

Section: Introductionmentioning

confidence: 99%

Quadrupole Plasmon Lasers with a Super Low Threshold Based on an Active Three-Layer Nanoshell Structure

Song

Niu

et al. 2015

Plasmonics

View full text Add to dashboard Cite

An active three-layer silica-silver-silica nanoshellbased plasmon laser with a super low threshold is proposed. Using the finite element method, the optical cross-sections of the core-shell nanoparticle with different gain levels were calculated and the gain thresholds of the nanoparticle-based plasmon lasers fueled by different plasmon modes were determined. The calculation results indicated that when quadrupole plasmon oscillations excited in nanoshell structures were used as the lasing mode, the gain threshold of the plasmonic laser dropped by 87 % compared with that of a conventional plasmon laser with a dipole mode. By optimizing the structural parameters of the layered nanoshell, an extremely low threshold (~0.0133) over a wider resonant range of wavelength tunings was obtained. The underlying physics of low-threshold surface plasmon amplification was explained by investigating the Q factor, the mode volume, the Purcell factor, and the optical field confinement and enhancement associated with the lasing mode.

show abstract

Section: Introductionmentioning

confidence: 99%

Quadrupole Plasmon Lasers with a Super Low Threshold Based on an Active Three-Layer Nanoshell Structure

Song

Niu

et al. 2015

Plasmonics

View full text Add to dashboard Cite

show abstract

“…Moreover, similar NPs were employed in the design of optical metamaterials [8], whereas artificial material designs utilizing more realistic spherical active NPs were reported in [9]. The fundamental properties of truncated cylindrical active NPs (nano-rods) were examined in e.g., the works of [13,14]. While most of the efforts were concentrated on the use of NPs under the plane wave applications, the effects of their excitation by localized radiation sources were examined recently in [15][16][17] for spherical as well as cylindrical coated NP configurations.…”

Section: Introductionmentioning

confidence: 99%

Effects of layer eccentricity on the super-resonant states of active cylindrical core-shell nano-particles

Thorsen

Arslanagić

2015

EPJ Applied Metamaterials

View full text Add to dashboard Cite

-This work reports on the effects of layer eccentricity on the resonant properties of active cylindrical coreshell nano-particles excited by a near-by exterior magnetic line source. The core-shell particles consist of a silver core layered with a silica shell. For a fixed over-all radius of the nano-particle equal to 30 nm, we investigate designs with relatively small (radius equal to 6 nm) and large (radius equal to 24 nm) silver cores and we quantify their performance characteristics in terms of the near-and far-field properties. Our results show that the super-resonances, known to exist in the concentric version of these nano-particles, are significantly influenced by introducing eccentricity (through displacements of the silver core relative to the silica shell). In particular, their amplitude responses are found to diminish significantly for silver core displacements ! 3 nm for the small core case, and even for displacements ! 1 nm for the large core case. The present results are useful from the experimental point of view since slight displacements of the centers of the core and shell parts of the investigated nano-particles are likely to occur in standard fabrication processes.

show abstract

“…There have been a variety of proposals for introducing gain into plasmonic-based structures to overcome these losses [4,Chap. 4,[5][6][7][8][9][10][11][12][13][14]. Thus, these passive and active nano-systems are distinguishable by the presence of gain materials.…”

Section: Introductionmentioning

confidence: 99%

INFLUENCE OF ACTIVE NANO PARTICLE SIZE AND MATERIAL COMPOSITION ON MULTIPLE QUANTUM EMITTER ENHANCEMENTS: THEIR ENHANCEMENT AND JAMMING EFFECTS (Invited Paper)

Arslanagić¹,

Ziolkowski²

2014

PIER

View full text Add to dashboard Cite

Abstract-In the 150 years that scientists and engineers have used Maxwell's equations to describe electromagnetic phenomena, canonical scattering and radiating problems have played a very important role, providing explanations of and insights into their underlying physics. With the same intent, a variety of active coated nano-particles are examined here theoretically with regard to their ability to effectively enhance or jam the responses of quantum emitters, e.g., fluorescing molecules, and nanoantennas to an observer located in their far-field regions. The investigated spherical particles consist of a gain-impregnated silica nano-core covered with a nano-shell of a specific plasmonic material. Attention is devoted to the influence of the over-all size of these particles and their material composition on the obtained levels of active enhancement or jamming. Silver, gold and copper are employed as their nanoshells. The over-all diameters of the investigated coated nano-particles are taken to be 20 nm, 40 nm, and 60 nm, while maintaining the same ratio of the core radius and shell thickness. It is shown that the jamming levels, particularly when several emitters are present, are significantly larger for particles of larger sizes. These configurations are also shown to lead to the largest enhancement levels of the surrounding quantum emitters. Furthermore, for a fixed particle size and for a gain constant that produces the largest enhancement peak at optical wavelengths, it is demonstrated that these larger levels are most notable when the nano-shell is gold.

show abstract

Efficient surface plasmon amplification from gain-assisted gold nanorods

Cited by 95 publications

References 22 publications

Quadrupole Plasmon Lasers with a Super Low Threshold Based on an Active Three-Layer Nanoshell Structure

Quadrupole Plasmon Lasers with a Super Low Threshold Based on an Active Three-Layer Nanoshell Structure

Effects of layer eccentricity on the super-resonant states of active cylindrical core-shell nano-particles

INFLUENCE OF ACTIVE NANO PARTICLE SIZE AND MATERIAL COMPOSITION ON MULTIPLE QUANTUM EMITTER ENHANCEMENTS: THEIR ENHANCEMENT AND JAMMING EFFECTS (Invited Paper)

Contact Info

Product

Resources

About