Analysis of the Purcell effect in photonic and plasmonic crystals with losses

Iwase, Hideo; Englund, Dirk; Vučković, Jelena

doi:10.1364/oe.18.016546

Cited by 70 publications

(74 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is in agreement with Ref. 42, where it was mentioned that SPP Purcell enhancement is almost independent of resistive loss for wavelengths where the group velocity is not approaching zero.…”

Section: Effect Of Loss In the Metalsupporting

confidence: 93%

See 1 more Smart Citation

Green's function approach to investigate the excitation of surface plasmon polaritons in a nanometer-thin metal film

2012

View full text Add to dashboard Cite

The two-dimensional magnetic-field Green's function for a nanometer-thin metal film embedded in a dielectric environment is constructed with the mode-expansion method. Explicit expressions are obtained for the Green's-function components related to the excitation of symmetric and antisymmetric surface-plasmon polariton (SPP) waves and out-of-plane propagating waves, respectively. The obtained expressions are used to study the power emitted by a magnetic dipole line source into the different radiation channels. For a wavelength of λ = 500 nm the total emitted power is found to increase by a factor of three (the Purcell factor), with approximately 60% going into SPP waves when the source is placed directly on the surface of a 15-nm-thick silver film. Results obtained with and without including ohmic losses in the calculations are only negligibly different. The presented semianalytical approach allows for an exact analysis of the excitation of SPP waves on nanometer-thin metal films and may therefore find several applications within nanoplasmonics.

show abstract

Section: Effect Of Loss In the Metalsupporting

confidence: 93%

“…The emission enhancement factor has recently been studied for waveguide geometries supporting SPP waves such as plasmonic V -groove ring cavities, 39 two-dimensional plasmonic waveguides, 40,41 and for an exciton near a thin planar metal film with and without a periodic array of holes. 42 Our paper is organized as follows. In Sec.…”

Section: Introductionmentioning

confidence: 99%

Green's function approach to investigate the excitation of surface plasmon polaritons in a nanometer-thin metal film

2012

View full text Add to dashboard Cite

show abstract

“…If the incident and scattered wavelengths significantly differ, e.g., in the second/ third harmonic generation, clearly only one of the mechanisms is supported by the SPP resonant mode. However, for Raman scattering, where the pump and Stokes wavelengths are relatively close, both mechanisms could simultaneously contribute to the enhancement [11,12]. Graphene possesses at least three well-separated Raman scattering peaks, namely the D, G, and 2D peaks, corresponding to a relative red-shift equivalent to approximately 1350, 1570, and 2700 cm -1 , respectively.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Raman scattering in graphene by plasmonic resonant Stokes emission

Ghamsari¹,

Olivieri²,

Variola³

et al. 2014

Nanophotonics

View full text Add to dashboard Cite

Exploiting surface plasmon polaritons to enhance interactions between graphene and light has recently attracted much interest. In particular, nonlinear optical processes in graphene can be dramatically enhanced and controlled by plasmonic nanostructures. This work demonstrates Raman scattering enhancement in graphene based on plasmonic resonant enhancement of the Stokes emission, and compares this mechanism with the conventional Raman enhancement by resonant pump absorption. Arrays of optical nanoantennas with different resonant frequency are utilized to independently identify the effects of each mechanism on Raman scattering in graphene via the measured enhancement factor and its spectral linewidth. We demonstrate that, while both mechanisms offer large enhancement factors (scattering cross-section gains of 160 and 20 for individual nanoantennas, respectively), they affect the graphene Raman spectrum quite differently. Our results provide a benchmark to assess and quantify the role and merit of each mechanism in surface-plasmon-mediated Raman scattering in graphene, and may be employed for design and realization of a variety of graphene optoelectronic devices involving nonlinear optical processes.

show abstract

“…11,18 A key question in all applications of such quantum dot arrays is the conditions of appropriate doping by metal particles so as to enhance the emission leading to more efficient sensors, light emitting or photovoltaic devices, and related aspects. For instance, enormous research has been undertaken to use local optical density of states (LDOS) engineering using photonic crystal devices [22][23][24][25] to enhance or quench the emission or radiative decay rates of quantum dots embedded near or inside such devices. Although it is possible to obtain very large quality (Q) factors in such systems, the large mode volumes (V) involved can result in Purcell factors (F p ¼ 3k 3 c 4p 2 n 3 Q V , k c the cavity resonance wavelength and n the refractive index of the medium) that are only moderately high.…”

Section: Introductionmentioning

confidence: 99%

Photoluminescence decay rate engineering of CdSe quantum dots in ensemble arrays embedded with gold nano-antennae

Haridas

Basu

Tiwari

et al. 2013

Journal of Applied Physics

View full text Add to dashboard Cite

We discuss experimental results on the ability to significantly tune the photoluminescence decay rates of CdSe quantum dots embedded in an ordered template, using lightly doped small gold nanoparticles (nano-antennae), of relatively low optical efficiency. We observe both enhancement and quenching of photoluminescence intensity of the quantum dots varying monotonically with increasing volume fraction of added gold nanoparticles, with respect to undoped quantum dot arrays. However, the corresponding variation in lifetime of photoluminescence spectra decay shows a hitherto unobserved, non-monotonic variation with gold nanoparticle doping. We also demonstrate that Purcell effect is quite effective for the larger (5 nm) gold nano-antenna leading to more than four times enhanced radiative rate at spectral resonance, for largest doping and about 1.75 times enhancement for off-resonance. Significantly for spectral off-resonance samples, we could simultaneously engineer reduction of non-radiative decay rate along with increase of radiative decay rate. Non-radiative decay dominates the system for the smaller (2 nm) gold nano-antenna setting the limit on how small these plasmonic nano-antennae could be to be effective in engineering significant enhancement in radiative decay rate and, hence, the overall quantum efficiency of quantum dot based hybrid photonic assemblies. V C 2013 AIP Publishing LLC.

show abstract

Analysis of the Purcell effect in photonic and plasmonic crystals with losses

Cited by 70 publications

References 40 publications

Green's function approach to investigate the excitation of surface plasmon polaritons in a nanometer-thin metal film

Green's function approach to investigate the excitation of surface plasmon polaritons in a nanometer-thin metal film

Enhanced Raman scattering in graphene by plasmonic resonant Stokes emission

Photoluminescence decay rate engineering of CdSe quantum dots in ensemble arrays embedded with gold nano-antennae

Contact Info

Product

Resources

About