Abstract:
Summary form only given. The mechanisms for the generation of coherent phonons with ultrafast laser pulses are not well understood for absorbing media. While the selection rules are usually consistent with those of stimulated Raman scattering, a definitive identification of the generation process hinges on analyses of the dependence of the phonon amplitude on the central frequency and width of the pulses. However, few resonant studies have been reported in the literature. We describe experiments on CdTe1-xSex quantum dots revealing a large resonant enhancement in the coherent phonon yield at laser energies in the vicinity of the fundamental gap. © 2001 Optical Soc. Of America.
Registro:
| Documento: |
Conferencia
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| Título: | Resonant excitation of coherent phonons in CdTe1-xSex quantum dots |
| Autor: | Bragas, A.V.; Merlin, R.; Costantino, S.; Ingale, A.; APS/Division of Laser Science; IEEE Lasers and Electro-Optics Society; OSA-Optical Society of America |
| Filiación: | Harrison M. Randall Laboratory of Physics, University of Michigan, Ann Arbor, MI 48109-1120, United States
Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, 1428, Argentina
Laser Physics Division, Centre for Advanced Technology, Indore, 452013, India
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| Palabras clave: | Cadmium telluride; Nanocrystals; Phonons; Quantum electronics; Semiconductor quantum dots; Ultrafast lasers; Absorbing media; Central frequency; Coherent phonons; Generation process; Laser energies; Resonant enhancements; Resonant excitation; Selection Rules; Quantum dot lasers |
| Año: | 2001
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| Página de inicio: | 67
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| DOI: |
http://dx.doi.org/10.1109/QELS.2001.961862 |
| Título revista: | Quantum Electronics and Laser Science Conference, QELS 2001
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| Título revista abreviado: | Tech. Dig. - Summ. Pap. Present. Quantum Electron. Laser Sci. Conf., QELS
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| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15575266_v_n_p67_Bragas |
Referencias:
- Merlin, R., Generating coherent THz phonons with light pulses (1997) Solid State Commun., 102, p. 207. , Highlights of Condensed Matter Physics
- Garrett, G.A., Albrecht, T.F., Whitaker, J.F., Merlin, R., Coherent THz phonons driven by light pulses and the Sb-problem: What is the mechanism? (1996) Phys. Rev. Lett., 77, p. 3661
- Stevens, T.E., Hebling, J., Kuhl, J., Merlin, R., Coherent Phonon Dynamics Studied by Impulsive Stimulated Raman Scattering (1999) Phys. Status Solidi (B), 215, p. 81
- Yeh, A.T., Cerullo, G., Banin, U., Mews, A., Alivisatos, A.P., Shank, C.V., Dynamics of exciton localization in CdS/HgS quantum-dot quantum wells (1999) Phys. Rev. B, 59, p. 4973
- Spagnolo, V., Scamarcio, G., Lugará, M., Righini, G.C., Raman scattering in CdTeSe and CdSSe nanocrystals embedded in glass (1994) Superlattices and Microstructures, 16, p. 51A4 - APS/Division of Laser Science; IEEE Lasers and Electro-Optics Society; OSA-Optical Society of America
Citas:
---------- APA ----------
Bragas, A.V., Merlin, R., Costantino, S., Ingale, A. & APS/Division of Laser Science; IEEE Lasers and Electro-Optics Society; OSA-Optical Society of America
(2001)
. Resonant excitation of coherent phonons in CdTe1-xSex quantum dots. Quantum Electronics and Laser Science Conference, QELS 2001, 67.
http://dx.doi.org/10.1109/QELS.2001.961862---------- CHICAGO ----------
Bragas, A.V., Merlin, R., Costantino, S., Ingale, A., APS/Division of Laser Science; IEEE Lasers and Electro-Optics Society; OSA-Optical Society of America
"Resonant excitation of coherent phonons in CdTe1-xSex quantum dots"
. Quantum Electronics and Laser Science Conference, QELS 2001
(2001) : 67.
http://dx.doi.org/10.1109/QELS.2001.961862---------- MLA ----------
Bragas, A.V., Merlin, R., Costantino, S., Ingale, A., APS/Division of Laser Science; IEEE Lasers and Electro-Optics Society; OSA-Optical Society of America
"Resonant excitation of coherent phonons in CdTe1-xSex quantum dots"
. Quantum Electronics and Laser Science Conference, QELS 2001, 2001, pp. 67.
http://dx.doi.org/10.1109/QELS.2001.961862---------- VANCOUVER ----------
Bragas, A.V., Merlin, R., Costantino, S., Ingale, A., APS/Division of Laser Science; IEEE Lasers and Electro-Optics Society; OSA-Optical Society of America Resonant excitation of coherent phonons in CdTe1-xSex quantum dots. Tech. Dig. - Summ. Pap. Present. Quantum Electron. Laser Sci. Conf., QELS. 2001:67.
http://dx.doi.org/10.1109/QELS.2001.961862