| dc.contributor | PETER PERETZ HALEVI | |
| dc.creator | ELIZABETH GALINDO LINARES | |
| dc.date | 2007-01 | |
| dc.date.accessioned | 2018-11-19T14:28:00Z | |
| dc.date.available | 2018-11-19T14:28:00Z | |
| dc.identifier | http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/596 | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/2258739 | |
| dc.description | In this thesis I consider tuning of the optical response of a one-dimensional
photonic crystal. The optical response is represented by (a) re
ectance and
(b) spontaneous emission. In both cases the photonic crystal is constituted
from alternating silicon (Si) and silica (SiO2) layers. The density of free
carriers in the Si layers is modulated at a level of 1019=cm3, the wavelength
of light being xed at 1:54m.
(a) I calculate the tuning of re
ectance of a one-dimensional photonic
crystal (PC) by means of charge injection. The PC is constituted from highly
doped Si layers alternating with SiO2 layers. The wavelength of the light is
assumed to be the important communications wavelength of 1:54m. A
realistic calculation shows that sensitive tuning, and switching as well, can
be achieved for an impurity density 1019=cm3 even for superlattices (SLs)
only a few periods long. The re
ectance results are satisfactorily interpreted
in terms of photonic band (PB) structure calculations.
(b) If the modal density available to an excited atom is varied on the time
scale of its lifetime, then we can expect the natural process of spontaneous
emission (SE) to become dynamically manipulable. I consider various experimental
possibilities and focus on an atom embedded in a PC designed to
have a band edge in the vicinity of the frequency of the emitted light. Specifically,
I calculate the rate of SE by erbium ions (radiating at the wavelength
1:54m) implanted in a one-dimensional Si/SiO2 PC. The semiconductor
layers are assumed to be strongly doped; by tuning the impurity density the
free carrier concentration changes and the PBs shift. As a result, the SE rate
exhibits signicant dependency on the level of charge injection. The body of
the thesis consists of two papers, corresponding to (a) and (b) above.
One of these has been already accepted for publication, while the other
has been submitted for publication. Their preprints are enclosed at the end
of the thesis. | |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.publisher | Instituto Nacional de Astrofísica, Óptica y Electrónica | |
| dc.relation | citation:Galindo-Linares E | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.rights | http://creativecommons.org/licenses/by-nc-nd/4.0 | |
| dc.subject | info:eu-repo/classification/Cristales fotónicos/Photonic crystals | |
| dc.subject | info:eu-repo/classification/Emisión espontánea/Spontaneous emission | |
| dc.subject | info:eu-repo/classification/Sistemas de conmutación fotónica/Photonic switching systems | |
| dc.subject | info:eu-repo/classification/Reflexión/Reflection | |
| dc.subject | info:eu-repo/classification/Sintonización/Tuning | |
| dc.subject | info:eu-repo/classification/cti/1 | |
| dc.subject | info:eu-repo/classification/cti/22 | |
| dc.subject | info:eu-repo/classification/cti/2203 | |
| dc.title | Tuning of the reflection and spontaneous emission of a one-dimensional photonic crystal | |
| dc.type | Tesis | |
| dc.type | info:eu-repo/semantics/acceptedVersion | |
| dc.audience | students | |
| dc.audience | researchers | |
| dc.audience | generalPublic | |
