Linear and Nonlinear Transmission of Surface Plasmon Polaritons in an Optical Nanowire

2004 ◽  
Vol 846 ◽  
Author(s):  
N. C. Panoiu ◽  
R. M. Osgood
Keyword(s):  
Surface Plasmon ◽  
Nonlinear Optical ◽  
Fdtd Method ◽  
Frequency Dispersion ◽  
Kerr Nonlinearity ◽  
Dielectric Shell ◽  
Polymer Metal ◽  
A Chain ◽  
Kerr Coefficient ◽  
20 Nm

ABSTRACTPolymer-metal composites offer the possibility of strongly enhanced nonlinear optical properties, which can be used for ultrasmall photonic devices. In this paper, we investigate numerically, by means of the finite-difference time-domain (FDTD) method, the propagation characteristics of surface plasmon polariton (SPP) modes excited in an optical nanowire consisting of a chain of either metallic cylinders or metallic spheres embedded in dielectric shells made of polymers (or other material) with optical Kerr nonlinearity. Our FDTD calculations incorporate both the nonlinear optical response of the dielectrics as well as the frequency dispersion of the metals, which is considered to obey a Drude-like model. It is demonstrated that, in the linear limit, the nanowire supports two SPP modes, a transverse and a longitudinal one, separated by Δλ = 20 nm. Furthermore, the dependence of the transmission of these SPP modes, on both the pulse peak power and Kerr coefficient of the dielectric shell, is investigated. Nonlinear optical phenomena, such as power-dependent mode frequency, switching, or optical limiting, are observed.

Manipulation of Ultrafast Nonlinear Optical Response Based on Surface Plasmon Resonance

2021 ◽  
pp. 2100847
Author(s):  
Yonglin He ◽  
Weimin Yang ◽  
Tien‐Mo Shih ◽  
Jingyu Wang ◽  
Dumeng Zhang ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Nonlinear Optical ◽  
Optical Response ◽  
Nonlinear Optical Response

scholarly journals Large 3rd Order Optical Kerr Nonlinearity in 2D PdSe2 Dichalcogenide Films for Integrated Nonlinear Photonic Chips

2021 ◽  
Author(s):  
David Moss
Keyword(s):  
High Performance ◽  
Nonlinear Optical ◽  
Laser Intensity ◽  
Nonlinear Refraction ◽  
Kerr Nonlinearity ◽  
Photonic Devices ◽  
Closed Aperture ◽  
Third Order ◽  
Limiting Behaviour ◽  
Incident Laser Intensity

<p>As a novel layered noble metal dichalcogenide material, palladium diselenide (PdSe<sub>2</sub>) has attracted wide interest due to its excellent optical and electronic properties. In this work, a strong third-order nonlinear optical response of 2D PdSe<sub>2</sub> films is reported. We conduct both open-aperture (OA) and closed-aperture (CA) Z-scan measurements with a femtosecond pulsed laser at 800 nm to investigate the nonlinear absorption and nonlinear refraction, respectively. In the OA experiment, we observe optical limiting behaviour originating from large two photo absorption (TPA) in the PdSe<sub>2</sub> film of <i>β =</i> 3.26 ×10<sup>-8</sup> m/W. In the CA experiment, we measure a peak-valley response corresponding to a large and negative Kerr nonlinearity of <i>n</i><sub>2</sub> = -1.33×10<sup>-15</sup> m<sup>2</sup>/W – two orders of magnitude larger than bulk silicon. In addition, the variation of <i>n</i><sub>2</sub> as a function of laser intensity is also characterized, with <i>n</i><sub>2</sub> decreasing in magnitude when increasing incident laser intensity, becoming saturated at <i>n</i><sub>2</sub> = -9.96×10<sup>-16</sup> m<sup>2</sup>/W at high intensities. Our results show that the extraordinary third-order nonlinear optical properties of PdSe<sub>2</sub> have strong potential for high-performance nonlinear photonic devices.</p>

scholarly journals Femtomolar and selective dopamine detection by a gold nanoparticle enhanced surface plasmon resonance aptasensor

2018 ◽  
Author(s):  
Yong Cao ◽  
Mark T. McDermott
Keyword(s):  
Surface Plasmon Resonance ◽  
Detection Limit ◽  
Gold Nanoparticle ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Cdna Probe ◽  
Dna Aptamer ◽  
Dopamine Detection ◽  
Calibration Curves ◽  
20 Nm

ABSTRACTUltrasensitive and selective detection and quantification of dopamine (DA) plays a key role in monitoring neurodegenerative diseases. However, the detection limit reported for DA detection is typically in the lower nM range. Pushing the detection limit to pM or lower for this particular target to cover the physiological levels (< 130 pM) is significant. Herein, DA DNA aptamer (DAAPT) gold nanoparticle (AuNP) conjugate is utilized to enhance the surface plasmon resonance (SPR) signal, which enables to detect and quantify DA in the femtomolar (200 fM) to picomolar range. To the best of our knowledge, this is the lowest detection limit achieved for SPR sensing of dopamine. The as-prepared 10 nm DAAPT-AuNP conjugate demonstrates strong binding affinity (Kd = 3.1 ± 1.4 nM) to the complementary DNA (cDNA) probe on gold chip. The cDNA probe is immobilized to the chip via polydopamine surface chemistry, which allows the Michael addition of any primary amine-terminated biomolecules. By adjusting the concentration of the DAAPT-AuNP conjugate, two calibration curves are generated with dynamic ranges from 100 µM to 2 mM, and from 200 fM to 20 nM, respectively. Both calibration curves have negative slopes, showing good agreement to a dose-response curve in an enzyme inhibition assay. In addition, the sensing strategy is evaluated to be specific for DA detection using a series of DA analogs and other metabolites as potential interferences.

scholarly journals Multiple surface plasmon resonances enhanced nonlinear optical microscopy

Nanophotonics ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 487-493 ◽  
Author(s):  
Xiaohu Mi ◽  
Yuyang Wang ◽  
Rui Li ◽  
Mengtao Sun ◽  
Zhenglong Zhang ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Optical Microscopy ◽  
Surface Plasmon ◽  
Nonlinear Optical ◽  
Surface Plasmon Resonances ◽  
Nonlinear Optical Microscopy ◽  
Two Photon ◽  
Plasmon Resonances ◽  
Anti Stokes ◽  
Multiple Surface Plasmon Resonances

AbstractThe nonlinear optical microscopies of coherent two-photon excited fluorescence and anti-Stokes Raman scattering are strongly enhanced by multiple surface plasmon resonances (MSPRs). The Au@Ag nanorods presented strong MSPRs peaks at 800 and 400 nm, and can enhance nonlinear optical microscopy at fundamental and double frequencies, respectively. A two-dimensional (2D) material of g-C3N4 is employed to study the plasmon-enhanced nonlinear optical microscopy by the femtosecond laser. The electric analysis reveals that the MSPRs of the Au@Ag nanorod can significantly enhance the signals of two-photon excited fluorescence and anti-Stokes Raman scattering by up to the orders of 104 and 1016, respectively. The results demonstrate the great advantages of plasmon-enhanced nonlinear optical microscopy for the optical analysis on 2D materials, thus providing a new adventure for increasing the optical resolutions of nonlinear optical microscopy.

Fabrication and Visible Response of Au-TiO2 (P25) Composite Photocatalyst with Obvious Surface Plasmon Resonance Effect

2012 ◽  
Vol 465 ◽  
pp. 215-219
Author(s):  
Ying Liu ◽  
Hong Tao Yu ◽  
Xie Quan
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Resonance Effect ◽  
Phenol Degradation ◽  
Composite Photocatalyst ◽  
Characteristic Absorption Peak ◽  
Strong Surface ◽  
Degussa P25 ◽  
20 Nm

Au-TiO2 composite photocatalysis material was fabricated by the photodeposition method. The SEM and TEM images demonstrate that Au-TiO2 NPs are with inerratic geometry and their diameters are in the range of 10 nm to 20 nm. The UV-vis spectra shows the strong peaks in 200-400 nm and near 550 nm which are attributed to the characteristic absorption peak of TiO2 and the strong surface-plasmon-resonance of Au NPs, respectively. Under visible light irradiation, the phenol degradation dynamics constant on Au-TiO2 was 0.008 min-1 which was 4 times of that on Degussa P25. The effects of Au amount on the photocatalytic capability of Au-TiO2 were also investigated.

Surface plasmon hole burning at the interface of Cesium and Gold by Kerr nonlinearity

Optik ◽  
2020 ◽  
Vol 202 ◽  
pp. 163651 ◽  
Author(s):  
Umer Wahid ◽  
Aftab Khan ◽  
Bakht Amin ◽  
Arif Ullah
Keyword(s):  
Surface Plasmon ◽  
Kerr Nonlinearity ◽  
Hole Burning
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