Coherent phonon relaxation in CdSSe semiconductor quantum dots studied by femtosecond time-resolved resonant four-wave-mixing spectroscopy

Author

Waltner, P. ; Materny, A. ; Kiefer, W.

Author_Institution

Inst. fur Phys. Chem., Wurzburg Univ., Germany

fYear

2000

fDate

12-12 May 2000

Firstpage

52

Lastpage

53

Abstract

Summary form only given. We present femtosecond time-resolved investigations of non-equilibrium coherent 1.0 phonon dynamics in CdS/sub 0.7/Se/sub 0.3/ quantum dots embedded in a glass matrix. The three-dimensional quantum confinement of the LO phonons has been demonstrated by means of linear Raman spectroscopy. For the electron and hole states the size of the microcrystallites is in the regime of strong confinement.

Keywords

Fourier transform spectra; II-VI semiconductors; cadmium compounds; coherent antiStokes Raman scattering; crystallites; multiwave mixing; semiconductor doped glasses; semiconductor quantum dots; surface phonons; time resolved spectra; CdS/sub 0.7/Se/sub 0.3/; CdSSe semiconductor quantum dots; coherent phonon relaxation; electron states; femtosecond time-resolved investigations; femtosecond time-resolved resonant four-wave-mixing spectroscopy; glass matrix; hole states; linear Raman spectroscopy; microcrystallites; nonequilibrium coherent phonon dynamics; quantum dots; strong confinement regime; three-dimensional quantum confinement; Discrete cosine transforms; Equations; Nonlinear optics; Optical control; Optical polarization; Phonons; Quantum dots; Spectroscopy; US Department of Transportation; Ultrafast optics;

fLanguage

English

Publisher

ieee

Conference_Titel

Quantum Electronics and Laser Science Conference, 2000. (QELS 2000). Technical Digest

Conference_Location

San Francisco, CA, USA

ISSN

1094-5695

Print_ISBN

1-55752-608-7

Type

conf

Filename

901605