東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Ultrafast optical studies of phonon ...

Bianchini, Andrea.

Linked to FindBook

Google Book

Amazon

博客來

Ultrafast optical studies of phonon polaritons, squeezed modes and high frequency diamagnetism in metamaterials.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Ultrafast optical studies of phonon polaritons, squeezed modes and high frequency diamagnetism in metamaterials./
Author:	Bianchini, Andrea.
Description:	128 p.
Notes:	Source: Dissertation Abstracts International, Volume: 73-11(E), Section: B.
Contained By:	Dissertation Abstracts International73-11B(E).
Subject:	Physics, Solid State. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3519542
ISBN:	9781267455239

Ultrafast optical studies of phonon polaritons, squeezed modes and high frequency diamagnetism in metamaterials.
Bianchini, Andrea.

Ultrafast optical studies of phonon polaritons, squeezed modes and high frequency diamagnetism in metamaterials. - 128 p.

Source: Dissertation Abstracts International, Volume: 73-11(E), Section: B.

Thesis (Ph.D.)--University of Michigan, 2012.

This item must not be sold to any third party vendors.

The coupling of the electromagnetic field with polar lattice vibrations of a solid, which gives rise to what is traditionally known as phonon polaritons, is investigated both through spontaneous and stimulated Raman scattering. Experimental results relative to polariton modes excited in several semiconductors are presented to explore their dependence on the crystal symmetry, temperature, excitation wavelength and measuring techniques.

ISBN: 9781267455239Subjects--Topical Terms:

1669244
Physics, Solid State.

Ultrafast optical studies of phonon polaritons, squeezed modes and high frequency diamagnetism in metamaterials.
LDR:03493nmm a2200349 4500 001 2057952
005 20150702081932.5
008 170521s2012 ||||||||||||||||| ||eng d
020 $a 9781267455239
035 $a (MiAaPQ)AAI3519542
035 $a AAI3519542
040 $a MiAaPQ $c MiAaPQ
100 1 $a Bianchini, Andrea. $3 3171847
245 1 0 $a Ultrafast optical studies of phonon polaritons, squeezed modes and high frequency diamagnetism in metamaterials.
300 $a 128 p.
500 $a Source: Dissertation Abstracts International, Volume: 73-11(E), Section: B.
500 $a Adviser: Roberto D. Merlin.
502 $a Thesis (Ph.D.)--University of Michigan, 2012.
506 $a This item must not be sold to any third party vendors.
506 $a This item must not be added to any third party search indexes.
520 $a The coupling of the electromagnetic field with polar lattice vibrations of a solid, which gives rise to what is traditionally known as phonon polaritons, is investigated both through spontaneous and stimulated Raman scattering. Experimental results relative to polariton modes excited in several semiconductors are presented to explore their dependence on the crystal symmetry, temperature, excitation wavelength and measuring techniques.
520 $a In GaAs we find discrepancies between spontaneous and Impulsive Stimulated Raman Scattering (ISRS) which are attributed to the presence of free carriers interacting with the electric field of the longitudinal phonon mode. In CraSe, we successfully excite two distinct frequencies of the lower phonon polariton branch. In the transparent regime, this is accomplished combining in the same experiment backward and forward scattering, the latter one induced by the beam reflected at the back surface of the sample. Moreover, it is shown how the reduced value of the scattering cross section retrieved in the time domain experiments is attributable to the polariton field spatial distribution, estimated in accordance with the Cherenkov radiation theory. In CdSe we identify another polariton mode that is present whenever the dielectric constant of a medium becomes negative: the surface plasmon polariton.
520 $a Besides coherent phonons, squeezed phonons are studied. discussing their generation and detection in regard to the ISRS theory. In particular we introduce a novel phenomenon, named "phonon echo", occurring whenever a squeezed phonon field is induced in a crystal through a double pump excitation. Simulations are shown to validate the theoretical predictions and pave the way to future experiments.
520 $a Shifting to the metamaterial field, we consider a viable technique to achieve artificial diamagnetism (the magnetic permeability mu is < 1). The proposed approach is based on the well established sphere-in-a-host model that is thoroughly described with particular emphasis on its conditions of validity. Several samples are fabricated and measured in the microwave range where the extracted permeability turns out to be as low as 0.4. Experimental data adhere closely to the numerical simulations except for the bigger sphere samples: a plausible explanation to interpret this apparent mismatch is proposed and justified.
590 $a School code: 0127.
650 4 $a Physics, Solid State. $3 1669244
650 4 $a Physics, Optics. $3 1018756
650 4 $a Materials science. $3 543314
690 $a 0600
690 $a 0752
690 $a 0794
710 2 $a University of Michigan. $3 777416
773 0 $t Dissertation Abstracts International $g 73-11B(E).
790 $a 0127
791 $a Ph.D.
792 $a 2012
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3519542