Title :
Dynamics of time-resolved reststrahl band reflectivity in semiconductors
Author :
Cho, G.C. ; Han, P.Y. ; Bakker, H.J. ; Zhang, X.-C.
Author_Institution :
Dept. of Phys., Rensselaer Polytech. Inst., Troy, NY, USA
Abstract :
Summary form only given. We report on the time-resolved coherent waveform of subpicosecond infrared pulse in the reststrahl bands of polar semiconductors. We observe strong oscillations at a frequency near longitudinal optical (LO) phonons in the reflection. The damping time constants of the oscillations show to be comparable to those of coherent phonons. Analyzing the data in different time window gives us dynamic information on the reststrahl band optical property mediated by phonons.
Keywords :
phonons; polar semiconductors; reflectivity; submillimetre wave spectra; time resolved spectra; LO phonon; coherent terahertz spectroscopy; damping time constant; polar semiconductor; subpicosecond infrared pulse; time-resolved reststrahl band reflectivity; Damping; Frequency; Optical pulse generation; Optical pulses; Optical reflection; Optical sensors; Phonons; Reflectivity; Stimulated emission; Zinc compounds;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 1999. QELS '99. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-576-X
DOI :
10.1109/QELS.1999.807599
