High optical resonance sensitivity to its environment of a fibered bowtie nano-aperture antenna

Atie, Elie; Tannous, Tony Abi; Grosjean, Thierry; Baida, Fadi

doi:10.1007/s00340-015-6169-y

Cited by 5 publications

(5 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5 and show that the resonance properties (both resonance wavelength and enhancement factors) of the DA are affected by the presence of the substrate. This phenomenon was already pointed out for another kind of nano-antennas, such as a bowtie nano-antenna 11 or the bowtie nano-aperture antenna ( BNA ) for which the resonance properties were examined as a function of the antenna-to-substrate distance 24 , 25 . In the latter cases, a shift as large as Δ λ = 500 nm of the resonance wavelength of a BNA occurs when the latter moves up over 10 nm from the substrate interface.…”

Section: Force Results: the Three Different Regimesmentioning

confidence: 70%

“…In the present case, the shift is smaller (only Δ λ = 70 nm ) due to the small contrast of the optical index between the substrate ( n = 1.49) and the superstrate ( n = 1.315) compared to the case of InP ( n = 3.17) and air ( n = 1) considered in the study of ref. 25 . Nevertheless, we should take into account this shift especially if we aim to operate at a given value of the wavelength.…”

Section: Force Results: the Three Different Regimesmentioning

confidence: 99%

See 1 more Smart Citation

Optical Manipulation of nanoparticles by simultaneous electric and magnetic field enhancement within diabolo nanoantenna

Hameed

Ali

Baida

2017

Sci Rep

Self Cite

View full text Add to dashboard Cite

In this paper, we propose and numerically simulate a novel optical trapping process based on the enhancement and the confinement of both magnetic and electric near-fields by using gold Diabolo Antenna (DA). The later was recently proposed to generate huge magnetic near-field when illuminated by linearly polarized wave along its axis. Numerical 3D – FDTD simulation results demonstrate the high confinement of the electromagnetic field in the vicinity of the DA. This enhancement is then exploited for the trapping of nano-particles (NP) as small as 30 nm radius. Results show that the trapping process greatly depends on the particle dimensions and that three different regimes of, trapping at contact, trapping without contact, or pushing can be achieved within the same DA. This doubly resonant structure opens the way to the design of a novel generation of efficient optical nano-tweezers that allow manipulation of nano-particles by simply changing the operation wavelength.

show abstract

Section: Force Results: the Three Different Regimesmentioning

confidence: 70%

Section: Force Results: the Three Different Regimesmentioning

confidence: 99%

Optical Manipulation of nanoparticles by simultaneous electric and magnetic field enhancement within diabolo nanoantenna

Hameed

Ali

Baida

2017

Sci Rep

Self Cite

View full text Add to dashboard Cite

show abstract

“…The tip-to-sample distance is kept constant (within 15 nm) with a shear-force feedback loop. Note that the spectral position of resonances are dependent on the distance between the tip and the surface, especially at the considered short tip-to-sample spacings . Because the tip-to-sample distance is known with an accuracy of ±5 nm, the resulting uncertainty in the resonance spectral positions is predicted to not exceed ±15 nm, which has a negligible consequence on the signal detection in our case.…”

Section: Resultsmentioning

confidence: 81%

“…Note that the spectral position of resonances are dependent on the distance between the tip and the surface, especially at the considered short tip-to-sample spacings. 37 Because the tip-to-sample distance is known with an accuracy of ±5 nm, the resulting uncertainty in the resonance spectral positions is predicted to not exceed ±15 nm, 37 which has a negligible consequence on the signal detection in our case. Single CQDs are locally excited by the nanoantenna with in-fiber illumination at λ = 808 nm from a laser diode (BlueSky Research).…”

Section: T H I S C O N T E N T Imentioning

confidence: 84%

Doubly Resonant Photonic Antenna for Single Infrared Quantum Dot Imaging at Telecommunication Wavelengths

et al. 2017

Self Cite

View full text Add to dashboard Cite

Colloidal Quantum dots (CQDs) are nowadays one of the cornerstones of modern photonics as they have led to the emergence of new optoelectronic and biomedical technologies. However, the full characterization of these quantum emitters is currently restricted to the visible wavelengths and it remains a key challenge to optically probe single CQDs operating in the infrared spectral domain which is targeted by a growing number of applications. Here, we report the first experimental detection and imaging at room temperature of single infrared CQDs operating at telecommunication wavelengths. Imaging was done with a doubly resonant bowtie nano-aperture antenna (BNA) written at the end of a fiber nanoprobe, whose resonances spectrally fit the CQD absorption and emission wavelengths. Direct near-field characterization of PbS CQDs reveal individual nanocrystals with a spatial resolution of 75 nm (λ/20) together with their intrinsic 2D dipolar free-space emission properties and exciton dynamics (blinking phenomenon). Because the doubly resonant BNA is strongly transmissive at both the CQD absorption and emission wavelengths, we are able to perform all-fiber nano-imaging with a standard 20 % efficiency InGaAs avalanche photodiode (APD). Detection efficiency is predicted to be 3000 fold larger than with a conventional circular aperture tip of the same transmission area. Double resonance BNA fiber probes thus offer the possibility of exploring extreme light-matter interaction in low band gap CQDs with current plug-and-play detection techniques, opening up new avenues in the fields of infrared light emitting devices, photodetectors, telecommunications, bio-imaging and quantum information technology.

show abstract

“…The optical response of a resonator being strongly dependent on its environment [23,24], it is thus necessary to determine the influence of the presence of the InP substrate (without the cavity) as shown in figure 3(a) placed at a distance D z from the NP on their resonance properties. So, figure 3(b) shows the values of σ S and the spectral position (λ ED ) of the ED excitation as a function of D z .…”

Section: Study Of the Np-dielectric Substrate Couplingmentioning

confidence: 99%

Control of the light extraction from a photonic crystal nanocavity by coupling with a nanoparticle

2022

View full text Add to dashboard Cite

In this paper, we present a numerical study of the coupling between a nano-cavity, namely a Photonic Crystal Cavity (PCC) and a Nano-Particle (NP) in view of controlling the light extraction from the PCC. The main idea is to model such a near-field coupling for a NP designed to exhibit an electric dipole. We demonstrate the coupling to be very different allowing to manipulate the radiation spectrum of the whole structure in the far-field as a function of the NP position. The resonance wavelength of the PCC will be shifted toward the red region of the spectrum (up to 2 nm) while its quality factor changes dramatically according to the NP properties. This study opens the way to the development of a new kind of sources with both controllable wavelength resonance and radiation pattern.

show abstract

High optical resonance sensitivity to its environment of a fibered bowtie nano-aperture antenna

Cited by 5 publications

References 21 publications

Optical Manipulation of nanoparticles by simultaneous electric and magnetic field enhancement within diabolo nanoantenna

Optical Manipulation of nanoparticles by simultaneous electric and magnetic field enhancement within diabolo nanoantenna

Doubly Resonant Photonic Antenna for Single Infrared Quantum Dot Imaging at Telecommunication Wavelengths

Control of the light extraction from a photonic crystal nanocavity by coupling with a nanoparticle

Contact Info

Product

Resources

About