Generation and detection of coherent optical phonons in germanium
- 30 November 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 69 (22), 3248-3251
- https://doi.org/10.1103/physrevlett.69.3248
Abstract
Coherent optical phonons are generated impulsively in Ge by irradiation with femtosecond laser pulses. They are detected via reflectivity modulations in the time domain in a pump-probe configuration. The deformation potential of the optical phonon is responsible both for the generation and for the detection process. The excitation of the coherent optical phonons is explained by anisotropic weakening of bonding valence orbitals.Keywords
This publication has 18 references indexed in Scilit:
- Generation of coherent phonons in condensed mediaIEEE Journal of Quantum Electronics, 1992
- Generation of LO‐Phonons in a Time‐Dependent Electric Field at the Surface of III – V MaterialsPhysica Status Solidi (b), 1991
- Mechanism for displacive excitation of coherent phonons in Sb, Bi, Te, and Ti2O3Applied Physics Letters, 1991
- Subpicosecond time-resolved studies of coherent phonon oscillations in thin-film YBa2Cu3O6+x (x<0.4)Applied Physics Letters, 1991
- Impulsive excitation of coherent phonons observed in reflection in bismuth and antimonyApplied Physics Letters, 1990
- Subpicosecond time-resolved coherent-phonon oscillations in GaAsPhysical Review Letters, 1990
- On the difference between quantum beats in impulsive stimulated raman scattering and resonance Raman scatteringChemical Physics Letters, 1989
- Resonant impulsive-stimulated Raman scattering on malachite greenPhysical Review A, 1988
- Impulsive stimulated light scattering. I. General theoryThe Journal of Chemical Physics, 1987
- Femtosecond Relaxation Dynamics of Large MoleculesPhysical Review Letters, 1986