Propagation Characteristics of Surface Plasmon Waves on Au, Ag and Al at Optical Wavelengths
In this paper the propagation characteristics of Surface Plasmon Waves (SPWs) which exists on noble metals like gold (Au), silver (Ag) and aluminium (Al) due to the formation of Surface Plasmon Polaritons (SPPs), have been evaluated theoretically and simulated with the help of MATLAB programming lan...
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Sumy State University
2011-01-01
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| Series: | Журнал нано- та електронної фізики |
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| Online Access: | http://jnep.sumdu.edu.ua/download/numbers/2011/1,%20Part%205/articles/jnep_2011_V3_N1(Part5)_1010-1020.pdf |
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| author | Reshmi Maity Gaurav Kumar N.P. Maity |
| author_facet | Reshmi Maity Gaurav Kumar N.P. Maity |
| author_sort | Reshmi Maity |
| collection | DOAJ |
| description | In this paper the propagation characteristics of Surface Plasmon Waves (SPWs) which exists on noble metals like gold (Au), silver (Ag) and aluminium (Al) due to the formation of Surface Plasmon Polaritons (SPPs), have been evaluated theoretically and simulated with the help of MATLAB programming language. The variation of the propagation constant, the attenuation coefficient and penetration depth inside the metal and the dielectric has been evaluated. The variations of the spot size width with the propagating wavelength also have been determined for the metals. It has been found that highly conducting metals Au and Ag provide a strong confinement to the SPWs than Al at optical frequencies as the spot size width of the former is found to be nearly 10 µm less than that of the later. The comparative study reveals that metal having higher conductivity can support a more confined SPW, having a lower penetration depth than metals of lower conductivity at terahertz frequencies when its dielectric constant assumes a negative value. |
| format | Article |
| id | doaj-art-d8a4efe6368340e8b2cdcf8ec4bd49b1 |
| institution | OA Journals |
| issn | 2077-6772 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Sumy State University |
| record_format | Article |
| series | Журнал нано- та електронної фізики |
| spelling | doaj-art-d8a4efe6368340e8b2cdcf8ec4bd49b12025-08-20T02:21:20ZengSumy State UniversityЖурнал нано- та електронної фізики2077-67722011-01-013110101020Propagation Characteristics of Surface Plasmon Waves on Au, Ag and Al at Optical WavelengthsReshmi MaityGaurav KumarN.P. MaityIn this paper the propagation characteristics of Surface Plasmon Waves (SPWs) which exists on noble metals like gold (Au), silver (Ag) and aluminium (Al) due to the formation of Surface Plasmon Polaritons (SPPs), have been evaluated theoretically and simulated with the help of MATLAB programming language. The variation of the propagation constant, the attenuation coefficient and penetration depth inside the metal and the dielectric has been evaluated. The variations of the spot size width with the propagating wavelength also have been determined for the metals. It has been found that highly conducting metals Au and Ag provide a strong confinement to the SPWs than Al at optical frequencies as the spot size width of the former is found to be nearly 10 µm less than that of the later. The comparative study reveals that metal having higher conductivity can support a more confined SPW, having a lower penetration depth than metals of lower conductivity at terahertz frequencies when its dielectric constant assumes a negative value.http://jnep.sumdu.edu.ua/download/numbers/2011/1,%20Part%205/articles/jnep_2011_V3_N1(Part5)_1010-1020.pdfAttenuation coefficientPenetration depthPropagation constantSpot sizeSPPSPW. |
| spellingShingle | Reshmi Maity Gaurav Kumar N.P. Maity Propagation Characteristics of Surface Plasmon Waves on Au, Ag and Al at Optical Wavelengths Журнал нано- та електронної фізики Attenuation coefficient Penetration depth Propagation constant Spot size SPP SPW. |
| title | Propagation Characteristics of Surface Plasmon Waves on Au, Ag and Al at Optical Wavelengths |
| title_full | Propagation Characteristics of Surface Plasmon Waves on Au, Ag and Al at Optical Wavelengths |
| title_fullStr | Propagation Characteristics of Surface Plasmon Waves on Au, Ag and Al at Optical Wavelengths |
| title_full_unstemmed | Propagation Characteristics of Surface Plasmon Waves on Au, Ag and Al at Optical Wavelengths |
| title_short | Propagation Characteristics of Surface Plasmon Waves on Au, Ag and Al at Optical Wavelengths |
| title_sort | propagation characteristics of surface plasmon waves on au ag and al at optical wavelengths |
| topic | Attenuation coefficient Penetration depth Propagation constant Spot size SPP SPW. |
| url | http://jnep.sumdu.edu.ua/download/numbers/2011/1,%20Part%205/articles/jnep_2011_V3_N1(Part5)_1010-1020.pdf |
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