scholarly journals Experimental Demonstration of Surface Plasmon Polaritons Reflection and Transmission Effects

Sensors ◽  
2019 ◽  
Vol 19 (21) ◽  
pp. 4633 ◽  
Author(s):  
Lei Zheng ◽  
Urs Zywietz ◽  
Andrey Evlyukhin ◽  
Bernhard Roth ◽  
Ludger Overmeyer ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Incident Angle ◽  
Transmitted Wave ◽  
Reflection And Transmission ◽  
Reflected Waves ◽  
Propagation Behavior ◽  
Leakage Radiation ◽  
Novel Applications ◽  
Plasmon Polaritons

Special integrated photonic surface structures composed of a dielectric semicircle ridge and a dielectric block placed on a metal substrate are proposed for the investigation of surface plasmon polariton (SPP) reflection and transmission effects. A fabrication method called microscope projection photolithography was employed for the preparation of the structures. Leakage radiation microscopy was applied for the excitation and observation of surface plasmon polaritons (SPPs). It was observed that SPPs exhibit a remarkable decrease in intensity when impinging onto the rectangular dielectric block. Nevertheless, the transmitted wave out of the dielectric block was always observable. The propagation behavior of both the reflected waves at two boundaries (air/dielectric and dielectric/air) and the transmitted wave inside the dielectric block were demonstrated for different SPP incident conditions. The variation of the angles of reflection and transmission with respect to the incident angle was analytically and experimentally investigated. An agreement between the calculated results and the experimental results was obtained. Our findings might allow for novel applications in sensing and analytics once the structures will be functionalized.

scholarly journals Surface plasmon-polaritons in deformed graphene excited by attenuated total internal reflection

2019 ◽  
Vol 5 (1) ◽  
pp. 7-11
Author(s):  
Maksim O. Usik ◽  
Igor V. Bychkov ◽  
Vladimir G. Shavrov ◽  
Dmitry A. Kuzmin
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Total Internal Reflection ◽  
Incident Angle ◽  
Incident Light ◽  
Attenuated Total Reflection ◽  
Reflection Method ◽  
Molding Flow ◽  
Plasmon Polaritons ◽  
Effective Excitation

Abstract In the present work we theoretically investigated the excitation of surface plasmon-polaritons (SPPs) in deformed graphene by attenuated total reflection method. We considered the Otto geometry for SPPs excitation in graphene. Efficiency of SPPs excitation strongly depends on the SPPs propagation direction. The frequency and the incident angle of the most effective excitation of SPPs strongly depend on the polarization of the incident light. Our results may open up the new possibilities for strain-induced molding flow of light at nanoscales.

scholarly journals Enhancement of the Surface Plasmon Polaritons Excitation Efficiency

2019 ◽  
Vol 54 (5) ◽  
Author(s):  
Riyadh D. Mansoor ◽  
Alistair Duffy
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Incident Angle ◽  
Thin Metal Film ◽  
Excitation Efficiency ◽  
Sensing Applications ◽  
Metal Thickness ◽  
Collective Oscillations ◽  
The Relationship ◽  
Plasmon Polaritons

Surface Plasmon Polaritons (SPPs) are propagating excitations that arise from the coupling of light with collective oscillations of electrons on the metal surface. This paper describes a new approach for increasing the SPP excitation efficiency. Using a computational electromagnetics approach, potential techniques for reducing incident power reflectivity were investigated using the Kretschmann configuration. The effects of different parameters such as incident angle, metal thickness, and dielectric permittivity were tested and optimized to improve the efficiency of SPPs by minimizing reflectivity. An 30% increase in efficiency was obtained. In addition, the optical response of a thin metal film on a glass substrate was numerically examined in terms of SPP excitation. The dependency of the response on the incident angle, materials, and dimensions were demonstrated. This paper describes how an improvement in efficiency can improve the effectiveness of bio-sensing applications through the proper choice of layer dimensions and material permittivity of different layers. The relationship between incident angle and reflectivity for different permittivities can be used for bio-sensing applications such as blood glucose biosensors, etc.

scholarly journals Directional excitation of surface plasmon polaritons via nanoslits under varied incidence observed using leakage radiation microscopy

2012 ◽  
Vol 20 (5) ◽  
pp. 4893 ◽  
Author(s):  
Yannick Sonnefraud ◽  
Sarp Kerman ◽  
Giuliana Di Martino ◽  
Dang Yuan Lei ◽  
Stefan A. Maier
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Leakage Radiation Microscopy ◽  
Leakage Radiation ◽  
Plasmon Polaritons

Efficient Guiding of Terahertz Wave by Thin Metal Corrugation on Both Surfaces

2011 ◽  
Vol 687 ◽  
pp. 65-69 ◽  
Author(s):  
Dong Bin Tian ◽  
Huai Wu Zhang ◽  
Qi Ye Wen ◽  
Wei Wei Ling ◽  
Yuan Qiang Song ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Time Domain ◽  
Terahertz Wave ◽  
Transmission Characteristic ◽  
Low Loss ◽  
Reflected Waves ◽  
Resonance Modes ◽  
Fabry Perot ◽  
Plasmon Polaritons

Thin structured periodic metallic corrugations on both sides of low-loss thin polythene slab are proposed to efficiently guide terahertz (THz) wave based on the surface plasmon polaritons (SPPs). THz time domain spectrometer was used to measure the transmission characteristic. Long-lasting Fabry-Perot resonance modes are demonstrated due to the interferences of the multiple reflected waves.

Leakage radiation imaging of surface plasmon polaritons

2006 ◽  
Author(s):  
A.L. Stepanov ◽  
H. Ditlbacher ◽  
A. Hohenau ◽  
A. Drezet ◽  
B. Steinberger ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Radiation Imaging ◽  
Leakage Radiation ◽  
Plasmon Polaritons

scholarly journals Directional launching of surface plasmon polaritons by electrically driven aperiodic groove array reflectors

Nanophotonics ◽  
2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Yuanhai Lin ◽  
Thanh Xuan Hoang ◽  
Hong-Son Chu ◽  
Christian A. Nijhuis
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Real Plane ◽  
Directional Control ◽  
Strip Waveguide ◽  
Leakage Radiation ◽  
On Chip ◽  
Experimental Findings ◽  
Programming Algorithms ◽  
Plasmon Polaritons

AbstractAccess to surface plasmon polaritons (SPPs) with directional control excited by electrical means is important for applications in (on-chip) nano-optoelectronic devices and to circumvent limitations inherent to approaches where SPPs are excited by optical means (e.g., diffraction limit). This paper describes directional excitation of surface plasmon polaritons propagating along a plasmonic strip waveguide integrated with an aperiodic groove array electrically driven by an Al–Al2O3–Au tunnel junction. The aperiodic groove array consists of six grooves and is optimized to specifically reflect the SPPs by 180° in the desired direction (+x or −x) along the plasmonic strip waveguide. We used constrained nonlinear optimization of the groove array based on the sequential quadratic programming algorithms coupled with finite-difference time-domain (FDTD) simulations to achieve the optimal structures. Leakage radiation microscopy (Fourier and real plane imaging) shows that the propagation direction of selectively only one SPP mode (propagating along the metal–substrate interface) is controlled. In our experiments, we achieved a directionality (i.e., +x/−x ratio) of close to 8, and all of our experimental findings are supported by detailed theoretical simulations.

Sign in / Sign up

Export Citation Format

Share Document