Abstract
The bound states of n Frenkel excitons (n = 2,3,...), which are called excitonic n-strings, are theoretically shown to exist in contrast with a system of Wannier excitons. The electronic structure and nonlinear optical responses of these excitonic n-strings are clarified. The first evidence for the excitonic 2- and 3-strings is provided from comparison of the calculated and observed differential transmission spectrum of an Anthracene-PMDA crystal pumped by femtosecond laser pulses.
Original language | English (US) |
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Pages (from-to) | 211-216 |
Number of pages | 6 |
Journal | Solid State Communications |
Volume | 88 |
Issue number | 3 |
DOIs | |
State | Published - Oct 1993 |
ASJC Scopus subject areas
- General Chemistry
- Condensed Matter Physics
- Materials Chemistry