Direct observation of amplified spontaneous emission of surface plasmon polaritons at metal/dielectric interfaces

Chen, Yuhui; Li, Jiafang; Ren, Ming; Wang, Benli; Fu, Jinxin; Liu, Si-Yun; Li, Zhiyuan

doi:10.1063/1.3605599

Cited by 23 publications

(16 citation statements)

References 25 publications

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“…One of the central issues, the interaction between light and active photonic and plasmonic nanostructured materials has attracted extensive and intensive interest of researches and studies [1][2][3][4][5][6]. The capability to control light at nanoscale by these active nanostructures has given rise to a rich variety of physical phenomena, such as trapping and manipulation of photons in a resonant nanocavity [1][2][3], coherent emission, transport, and amplification of surface plasmons [4][5][6], giant local field enhancement [7,8], compensation of metallic dissipation loss [9,10], and amplification of gain [11,12]. These phenomena can be harnessed for building high-efficiency miniaturized photonic and optoelectronic devices.…”

Section: Introductionmentioning

confidence: 99%

All-analytical semiclassical theory of spaser performance in a plasmonic nanocavity

Zhong

2013

Phys. Rev. B

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Experimental approaches to manipulate light-matter interaction at nanoscale have quickly advanced in recent years, leading to the demonstration of spaser (surface plasmon amplification by stimulated emission of radiation) in plasmonic nanocavities. Yet, a well-understood analytical theory to better understand and quantitatively explain the connotation of spaser system is urgently needed. Here we develop an all-analytical semiclassical theory to investigate the energy exchange between active materials and fields and the spaser performance in a plasmonic nanocavity. The theory incorporates the four-level atomic rate equations in association with the classical oscillator model for active materials and Maxwell's equations forfields, thus allowing one to uncover the relationship between the characteristics of spaser (the output power, saturation, threshold, etc.) and the nanocavity parameters (quality factor, mode volume, loss, spontaneous emission efficiency, etc.), atomic parameters (number density, linewidth, resonant frequency etc.), and external parameters (pumping rate, etc.). The semiclassical theory has been employed to analyze previous spaser experiments, which shows that a single gold nanoparticle plasmonic nanocavity is very difficult to ignite spaser due to too high threshold. The theory can be commonly used in understanding and designing all novel microlaser, nanolaser, and spaser systems.

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Section: Introductionmentioning

confidence: 99%

All-analytical semiclassical theory of spaser performance in a plasmonic nanocavity

Zhong

2013

Phys. Rev. B

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“…Such a semiclassical theory model is still used for the characteristic analysis and structure design of most current SPP waveguide amplifiers [17]- [19]. It is well known that the amplified spontaneous emissions (ASE) are inevitable in any stimulated light amplification process and the ASE coupled to the guided SPP modes have also been observed in recent SPP amplification experiments [20], [21]. However, such ASE effects are not taken into account in the semiclassical theory model, and thus the model may not be capable of accurately acquiring the gain properties of the SPP waveguide amplifier, not to mention the noise behaviors.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Amplification Characteristics of Surface Plasmon Polaritons Based on the Rate-Equation Theory

Yao

Liu

Xing

et al. 2014

IEEE J. Quantum Electron.

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A rate-equation theory model with the amplified spontaneous emission (ASE) effect considered for the surface plasmon polariton (SPP) waveguide amplifier is presented for analyzing the SPP amplifications with both side and SPP pumping techniques. By partitioning the cross section of the waveguide to suitable small units and introducing the overlapping integrated factor in each unit, the 3-D coupled equations of the model can be simplified to 1-D equations, which could be solved more conveniently. With our model, the gain and noise properties of a dielectric-loaded SPP waveguide amplifier are simulated. The results show that the ASE effect reduces the signal gain and deteriorates the signal-to-noise ratio of the SPP amplifier. For both the pumping schemes, the gains and noises for SPP multimode amplifications depend on the waveguide structure. By optimizing the waveguide structure, the gainequalized amplification for different SPP modes may be achieved.

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“…Introducing optical gain into the dielectric material adjacent to the metal nanostructures has been identified as an effective means to compensate for the loss [18][19][20][21]. To date, the loss compensation of SPP has been demonstrated with various gain systems, such as lanthanide ion-doped glasses [22], quantum dot (QD)-doped films [23,24] and dye solutions [25]. However, these hybrid systems suffer from either large device sizes or sophisticated fabrication techniques [26], making them unsuitable for highly integrated photonic circuits and systems.…”

Section: Introductionmentioning

confidence: 99%

Loss compensation of surface plasmon polaritons in organic/metal nanowire heterostructures toward photonic logic processing

Wang

et al. 2019

Sci. China Mater.

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Surface plasmon polaritons (SPPs) are crucial for the development of next generation information and communication technologies. However, the ohmic losses inherent to all plasmonic devices seriously limit their practical application in on-chip photonic communications. Here, loss compensation of SPPs and their application in photonic logic processing was demonstrated in rationally designed organic/ silver nanowire heterostructures. The heterostructures were synthesized by inserting silver nanowires (AgNWs) into crystalline organic microwires, which served as a microscale optical gain medium. These heterostructures with large organic/metal interfacial areas ensured the efficient energy transfer from excitons to SPPs. Gain for subwavelength SPPs in the heterostructure was achieved through stimulated emission of strongly confined SPPs. Furthermore, cascade gain was performed to realize basic nanoscale photonic devices, such as Boolean logic units. The results would pave an alternative avenue to incorporating SPP-enhanced devices into hybrid photonic circuitry.

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Direct observation of amplified spontaneous emission of surface plasmon polaritons at metal/dielectric interfaces

Cited by 23 publications

References 25 publications

All-analytical semiclassical theory of spaser performance in a plasmonic nanocavity

All-analytical semiclassical theory of spaser performance in a plasmonic nanocavity

Analysis of Amplification Characteristics of Surface Plasmon Polaritons Based on the Rate-Equation Theory

Loss compensation of surface plasmon polaritons in organic/metal nanowire heterostructures toward photonic logic processing

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