SPACE-RESOLVED AND TIME-RESOLVED STUDY OF THE NONLINEAR-OPTICAL RESPONSES ON THE EXCITON IN A QUASI-2-DIMENSIONAL SYSTEM IN BII3

Authors
KARASAWA T AKAI I KAWAI T KONDO H MINO H KOMATSU T
Citation
T. Karasawa et al., SPACE-RESOLVED AND TIME-RESOLVED STUDY OF THE NONLINEAR-OPTICAL RESPONSES ON THE EXCITON IN A QUASI-2-DIMENSIONAL SYSTEM IN BII3, Progress in crystal growth and characterization of materials, 33(1-3), 1996, pp. 97-100
Citations number
5
Categorie Soggetti
Crystallography,"Materials Science, Characterization & Testing
Journal title
Progress in crystal growth and characterization of materials → ACNP
ISSN journal
09608974
Volume
33
Issue
1-3
Year of publication
1996
Pages
97 - 100
Database
ISI
SICI code
0960-8974(1996)33:1-3<97:SATSOT>2.0.ZU;2-V
Abstract
Macroscopic and efficient spreading of excitons from an exciting laser spot to the outside area along a quasi two-dimensional space of a pla nar-defect in BiI3 is presented by space- and time-resolved photolumin escence, and the degenerate Four Wave-Mixing (DFWM) signals by use of spatially separated two laser-beams. The photoluminescence shows wide spreading due to polariton-like transfer of excitons at low density an d wider that at higher density. The fast transfer of excitons at high density was detected as a coherent exciton-flow by the DFWM measuremen ts.