Journals Information
Universal Journal of Physics and Application Vol. 10(2), pp. 49 - 57
DOI: 10.13189/ujpa.2016.100204
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Induced Optical Bistability in a Composite of Ellipsoidal Metal/Dielectric Nanoparticles of Dielectric Core
Tolasa Tamasgen 1, Sisay Shewamare 2, Getnet Melese 3,*
1 Department of Physics, Jimma University, Ethiopia
2 Department of Physics, Wolkite University, Ethiopia
3 Department of Physics, Debre Tabor University, Ethiopia
ABSTRACT
In this paper, we studied the enhancement factor of local field for ellipsoidal metal composite, and optical induced bistability of metal/dielectric composites with in linear host matrixes. Using the calculated enhancement factor of local field and the cubic equation of the optical induced bistability of the composite material, the parameters of the bistability domain are calculated. The analytical and numerical results show that the enhancement factor of local field is extremely enhanced and the optical induced bistability increases its domain. It is shown that the local field in metal ellipsoidal particles with dielectric core in an external varying electric field has two maxima at two different frequencies. The second maximum becomes more important with increment in the metal fraction. At high metal fraction, the two bistability domains merge and form one entire bistability domain.
KEYWORDS
Dielectric Function, Optical Bistability, Enhancement Factor, Depolarization Factor
Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Tolasa Tamasgen , Sisay Shewamare , Getnet Melese , "Induced Optical Bistability in a Composite of Ellipsoidal Metal/Dielectric Nanoparticles of Dielectric Core," Universal Journal of Physics and Application, Vol. 10, No. 2, pp. 49 - 57, 2016. DOI: 10.13189/ujpa.2016.100204.
(b). APA Format:
Tolasa Tamasgen , Sisay Shewamare , Getnet Melese (2016). Induced Optical Bistability in a Composite of Ellipsoidal Metal/Dielectric Nanoparticles of Dielectric Core. Universal Journal of Physics and Application, 10(2), 49 - 57. DOI: 10.13189/ujpa.2016.100204.