LOGIN TO YOUR ACCOUNT

Username
Password
Remember Me
Or use your Academic/Social account:

CREATE AN ACCOUNT

Or use your Academic/Social account:

Congratulations!

You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.

Important!

Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message

CREATE AN ACCOUNT

Name:
Username:
Password:
Verify Password:
E-mail:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Harries, Michael David
Languages: English
Types: Doctoral thesis
Subjects: QC

Classified by OpenAIRE into

arxiv: Physics::Optics
In this thesis we demonstrate how the optical emission from a typical light emitting diode (LED) device can be spatially controlled via the deposition of a periodically structured gold film. A periodically structured gold film was deposited within a 20 um square aperture in the top, p-doped, contact surface of an AlGaInP/GaInP multiple quantum well edge emitting LED. We show that the far-field emission is vastly altered and is spatially controlled by the properties local to the surface plasmon. It is shown that each order of rotational symmetry produces a single emission curve in the far-field which is related directly to the coupling of photon to surface plasmon via the grating vector. We find that the origin of these strong emission curves in the far field is emission of the surface plasmon as photons. These are highly polarised and have a peak emission of 660 nm (as opposed to the peak wavelength from the standard LED device of 654 nm). The k vector for the surface plasmon propagating within the thin gold film with SiO2 islands is found to be 1.002x10 7 m"1 from experimental measurement. It is also shown that a similar gold film with a grating of 592 nm would result in normal emission. Considering the surface plasmon emission as being analogous to emission from a linear dipole antenna array, the far-field emission as a function of angle is modelled using Matlab. From comparison with real profile plots this suggests that a surface plasmon wave spans a distance of 7.5 nm which agrees approximately with the propagation length of a surface plasmon in this gold film.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • 16. Dynamical corrections to the image potential. Sunjic M., Toulouse G.,Lucas A.A. 415, s.l. : Solid State Commun., 1972, Vol. 11.
    • 17. Theory of electron-hole pair excitations in unimolecular processes at metal surfaces. Gadzuk J.W., Metiu H. 2603, s.l. : Phys. Rev. B, 1980, Vol. 22.
    • 86. Determination o f dielectric permittivity and thickness o f a metal layerfrom a surface plasmon resonance experiment. H. de Bruijn, R. Kooyman, J. Greve. 13^ Applied Optics, Vol. 29, pp. 1974-1978.
    • 87. Surface-plasmon photonic handgaps in dielectric gratings on a flat metal surface. J. Yoon, G. Lee, S. Song, C. Oh, P. Kim. 1, Journal of Applied Physics, Vol. 94, pp. 123-129.
    • 88. Born M., W olf E. Principles o f Optics: electromagnetic theory o f propagation, interference and diffraction o f light, s.l. : Pergamon Press, 1965.
    • 89. http://www.mathworks.com. Matlab.
    • 90. Plasmonics: Merging Photonics and Electronics at Nanoscale Dimensions. O zbay, Ekmel. 5758, s.l. : Science, 2006, Vol. 13, pp. 189-193.
  • No related research data.
  • No similar publications.

Share - Bookmark

Cite this article