Abstract
The poiar low frequency vibrational and relaxational modes crucial to understanding the structure and phase transitions of ferroelectric perovskite crystals are examined using impulsive stimulated Raman scattering (ISRS). At wavevectors near the Brillouin zone center, these modes are strongly coupled to light, and the pure optic mode behavior is deduced from the wavevector dependence of the mixed phonon-polaritons.
Original language | English (US) |
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Pages (from-to) | 251-262 |
Number of pages | 12 |
Journal | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 1861 |
DOIs | |
State | Published - Jun 17 1993 |
Event | Ultrafast Pulse Generation and Spectroscopy 1993 - Los Angeles, United States Duration: Jan 17 1993 → Jan 22 1993 |
Funding
This work was supported by NSF grant DMR-9002279 and ONR grant N00014-92-1503.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering