FEMTOSECOND SPECTROSCOPY OF SELF-TRAPPING PROCESSES OF HOLES AND EXCITONS IN ALKALI-HALIDES

Authors
IWAI S TOKIZAKI T NAKAMURA A SHIBATA T TANIMURA K SHLUGER A ITOH N
Citation
S. Iwai et al., FEMTOSECOND SPECTROSCOPY OF SELF-TRAPPING PROCESSES OF HOLES AND EXCITONS IN ALKALI-HALIDES, Journal of luminescence, 60-1, 1994, pp. 720-722
Citations number
8
Categorie Soggetti
Optics
Journal title
Journal of luminescence → ACNP
ISSN journal
00222313
Volume
60-1
Year of publication
1994
Pages
720 - 722
Database
ISI
SICI code
0022-2313(1994)60-1:<720:FSOSPO>2.0.ZU;2-1
Abstract
By pump and probe experiments we investigated self-trapping processes of holes and excitons in KI and RbI crystals. It is found that a free hole is relaxed initially into a one-center self-trapped hole (small p olaron) and subsequently a two-center self-trapped hole (V(k) center) is formed. The self-trapping of electron-hole pairs involves a one-cen ter self-trapped hole correlated with an electron as a precursor state for a self-trapped exciton.