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Physical Review B - Condensed Matter and Materials Physics, ISSN 1098-0121, 08/2007, Volume 76, Issue 8
Using 28-fs, 800-nm laser pulses we have coherently excited and subsequently probed, with time-dependent reflectivity, the Si zone-center optic phonon. The... 
LOCALIZED VIBRATIONS | PHYSICS, CONDENSED MATTER | III-V-COMPOUNDS | ULTRASHORT LASER-PULSES | FEMTOSECOND PUMP-PROBE | TEMPERATURE-DEPENDENCE | BISMUTH-FILMS | SPACE-CHARGE FIELDS | DISPLACIVE EXCITATION | ACTIVE PHONONS | TIME-RESOLVED OBSERVATION
Journal Article
JOURNAL OF PHYSICS-CONDENSED MATTER, ISSN 0953-8984, 07/2019, Volume 31, Issue 27, p. 275402
We employed femtosecond pump-probe technique to investigate the dynamics of coherent optical phonons in iron garnet. A phenomenological symmetry-based... 
ALUMINUM | PHYSICS, CONDENSED MATTER | pump-probe spectroscopy | ISRS | GENERATION | CRYSTAL | Raman spectroscopy | EMISSION | DISPLACIVE EXCITATION | coherent phonon
Journal Article
Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, 3/2013, Volume 110, Issue 12, pp. 4539 - 4544
Dynamical information on spin degrees of freedom of proteins or solids can be obtained by NMR and electron spin resonance. A technique with similar versatility... 
Quasiparticles | Superconductors | Pumps | Superconductivity | Phonons | Magnetic fields | Electric fields | Cuprates | Electrons | Symmetry | PHONONS | ELECTRONS | DISPLACIVE EXCITATION | MULTIDISCIPLINARY SCIENCES | Degrees of freedom (Mechanics) | Nuclear magnetic resonance spectroscopy | Research | Biophysics | Particles | Methods | Electric properties | Physical Sciences
Journal Article
Journal of Physics and Chemistry of Solids, ISSN 0022-3697, 11/2019, Volume 134, pp. 209 - 213
The lattice dynamics of bismuth nanoislands induced by ultrafast laser excitation is studied by ultrafast electron diffraction. The decay times of the Bragg... 
Femtosecond laser excitation | Bismuth nanoislands | Ultrafast electron diffraction | LATTICE-DYNAMICS | PHYSICS, CONDENSED MATTER | THERMAL-EXPANSION | DIFFRACTION | DISPLACIVE EXCITATION | CHEMISTRY, MULTIDISCIPLINARY | STRUCTURAL DYNAMICS | QUANTUM DOTS
Journal Article
Applied Physics Letters, ISSN 0003-6951, 08/2015, Volume 107, Issue 9, p. 91107
We use intense terahertz (THz) frequency electromagnetic pulses generated via optical rectification in an organic crystal to drive vibrational lattice modes in... 
TELLURIUM | PHYSICS, APPLIED | LATTICE BANDS | PULSE | GAP | DYNAMICS | DISPLACIVE EXCITATION | ELECTROMAGNETIC PULSES | EXCITATION | LASERS | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS | MONOCRYSTALS | PHONONS | SYMMETRY | SPECTROSCOPY | OSCILLATORS | TIME RESOLUTION | DETECTION | POLARIZATION | SURFACES
Journal Article
Structural Dynamics, ISSN 2329-7778, 05/2019, Volume 6, Issue 3, pp. 035101 - 035101-9
Journal Article
Applied Surface Science, ISSN 0169-4332, 2007, Volume 253, Issue 15, pp. 6301 - 6304
Ultrafast time-resolved reflectivity of a bismuth thin film evaporated on a silicon substrate is measured to investigate coherent phonons in bismuth. The... 
Femtosecond laser | Bismuth | Coherent phonon | Raman scattering | Displacive excitation | TELLURIUM | raman scattering | displacive excitation | PHYSICS, CONDENSED MATTER | PHYSICS, APPLIED | femtosecond laser | MECHANISM | CHEMISTRY, PHYSICAL | coherent phonon | SCATTERING | MATERIALS SCIENCE, COATINGS & FILMS | bismuth
Journal Article
Physical Review Letters, ISSN 0031-9007, 02/2013, Volume 110, Issue 7, p. 077402
The detection-energy dependence of a coherent phonon in a (001) CdTe crystal, generated by ultrashort laser pulses with the center energy transparent or opaque... 
LIGHT-PULSES | CONDENSED MEDIA | MECHANISM | PHYSICS, MULTIDISCIPLINARY | SEMICONDUCTORS | THZ PHONONS | OSCILLATIONS | DISPLACIVE EXCITATION | SCATTERING
Journal Article
Journal of Experimental and Theoretical Physics, ISSN 1063-7761, 4/2015, Volume 120, Issue 4, pp. 651 - 663
Journal Article
Science, ISSN 0036-8075, 2/2007, Volume 315, Issue 5812, pp. 633 - 636
Journal Article
Physical Review B - Condensed Matter and Materials Physics, ISSN 1098-0121, 08/2013, Volume 88, Issue 6
Femtosecond laser pulses are used to excite coherent optical phonons in single crystal Bi2Te3 thin films. Oscillations from low-and high-frequency A(1g) phonon... 
PHYSICS, CONDENSED MATTER | SB2TE3 | MECHANISM | SURFACE | RAMAN | BI2SE3 | DISPLACIVE EXCITATION
Journal Article
Physical Review Letters, ISSN 0031-9007, 07/1999, Volume 83, Issue 4, pp. 800 - 803
Ultrafast transient reflectivity changes caused by collective and single particle excitations in the quasi-one-dimensional charge-density wave (CDW)... 
COHERENT PHONONS | YBA2CU3O7-DELTA | PHYSICS, MULTIDISCIPLINARY | DISPLACIVE EXCITATION | SCATTERING | K0.30MOO3 | Physics - Strongly Correlated Electrons
Journal Article
by Wang, J.L and Guo, L and Liu, C.H and Xu, X and Chen, Y.F
Applied Physics Letters, ISSN 0003-6951, 08/2015, Volume 107, Issue 6, p. 63107
Ultrafast energy relaxation process in Bi2Te3 thin films is studied using a collinear two color pump-probe technique. The coherent optical phonon is enhanced... 
DYNAMICS | PHYSICS, APPLIED | BI2TE3 | DISPLACIVE EXCITATION | GAAS | PULSES
Journal Article
Physical Review Letters, ISSN 0031-9007, 01/2013, Volume 110, Issue 4, p. 047401
Illumination with laser sources leads to the creation of excited electronic states of particular symmetries, which can drive isosymmetric vibrations. Here, we... 
COHERENT THZ PHONONS | BISMUTH | LIGHT-PULSES | MECHANISM | PHYSICS, MULTIDISCIPLINARY | DISPLACIVE EXCITATION
Journal Article
APPLIED PHYSICS LETTERS, ISSN 0003-6951, 09/2008, Volume 93, Issue 11, p. 113114
Femtosecond pulses are used to excite A(1g) optical phonons in Bi2Te3, Sb2Te3, and Bi2Te3/Sb2Te3 superlattice. Time-resolved reflectivity measurements show... 
PHYSICS, APPLIED | SB2TE3 | BI2TE3 | MECHANISM | THERMAL-CONDUCTIVITY | DISPLACIVE EXCITATION
Journal Article
Applied Physics Letters, ISSN 0003-6951, 06/2014, Volume 104, Issue 24, p. 241911
In this study, the dynamics of energy carriers in polycrystalline bismuth telluride nanofilm are investigated by the ultrafast pump-probe method. The energy... 
COHERENT PHONONS | PHYSICS, APPLIED | GENERATION | DISPLACIVE EXCITATION | PULSES | BISMUTH COMPOUNDS | EXCITATION | REFLECTIVITY | THERMALIZATION | THIN FILMS | CARRIER MOBILITY | TRAPPING | PHOTONS | CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY | RELAXATION | NANOSTRUCTURES | CARRIERS | PHONONS | TELLURIDES | ELECTRON-PHONON COUPLING | DIFFUSION | OSCILLATIONS | POLYCRYSTALS
Journal Article
Physical Review B - Condensed Matter and Materials Physics, ISSN 1098-0121, 08/2005, Volume 72, Issue 6
Separate theoretical and experimental investigations of the effect of lattice anharmonicity on the A(1g) phonon dynamics in photoexcited bismuth are presented.... 
TELLURIUM | COHERENT PHONONS | PHYSICS, CONDENSED MATTER | 1ST-PRINCIPLES | DISPLACIVE EXCITATION | PULSES
Journal Article
Physical Review B - Condensed Matter and Materials Physics, ISSN 1098-0121, 07/2014, Volume 90, Issue 3
We report observations of coherent phonon oscillations in solution-processed polycrystalline stibnite (Sb2S3) photovoltaic thin films using transient... 
PHYSICS, CONDENSED MATTER | PHYSICS, APPLIED | SB2S3 | MECHANISM | MATERIALS SCIENCE, MULTIDISCIPLINARY | CRYSTALS | DISPLACIVE EXCITATION
Journal Article