
Proceedings Paper
Optical surface modes in finite photonic crystals based on porous silicon studied by third-harmonic spectroscopyFormat | Member Price | Non-Member Price |
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Paper Abstract
This work is devoted to the first experimental observation of
optical features in spectra of reflectance and third-harmonic
generation of the finite one-dimensional photonic crystals based of
the porous silicon, which caused by "surface" modes of an
electromagnetic field, similarly to surface states of semiconductors
and dielectrics. Semiconductor surface states correspond to
electronic wave which total reflect from potential barrier
crystal-vacuum as well as crystal lattice due to Brag interference.
Therefore the electrons can propagate only along the crystal
surface. Similar effect can observed in electromagnetic spectrum of
photonic crystals. Although ordinary photonic crystals have not
potential barrier crystal-vacuum for photons but they have modified
density of modes at the surface. The surface waves existed at the
interface of two optically different media can be observed using
attenuated total reflectance configuration whereas the change of
density of modes gives a sensitive tool to observe optical
properties in the surface region. For observation optical features
associated to surface states of photonic crystal we have to create
the photonic crystal with few layers - finite photonic crystal. Also
we can observe changes of electromagnetic density of modes by using
third-harmonic generation spectroscopy. Dependence of resonances of
third-harmonic generation on number of layers in the structure was
observed. Increase of Q-factor of photonic crystals lead to wash out
optical features of surface modes in a linear spectrum, whereas the
nonlinear optics remains sensitive to eigenmodes.
Paper Details
Date Published: 7 July 2005
PDF: 7 pages
Proc. SPIE 5840, Photonic Materials, Devices, and Applications, (7 July 2005); doi: 10.1117/12.608616
Published in SPIE Proceedings Vol. 5840:
Photonic Materials, Devices, and Applications
Goncal Badenes; Derek Abbott; Ali Serpenguzel, Editor(s)
PDF: 7 pages
Proc. SPIE 5840, Photonic Materials, Devices, and Applications, (7 July 2005); doi: 10.1117/12.608616
Show Author Affiliations
D. G. Gusev, M. V. Lomonosov Moscow State Univ. (Russia)
O. A. Aktsipetrov, M. V. Lomonosov Moscow State Univ. (Russia)
Published in SPIE Proceedings Vol. 5840:
Photonic Materials, Devices, and Applications
Goncal Badenes; Derek Abbott; Ali Serpenguzel, Editor(s)
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