CINECA IRIS Institutional Research Information System
IRIS è la soluzione IT che facilita la raccolta e la gestione dei dati relativi alle attività e ai prodotti della ricerca. Fornisce a ricercatori, amministratori e valutatori gli strumenti per monitorare i risultati della ricerca, aumentarne la visibilità e allocare in modo efficace le risorse disponibili.
EnglishThe photonic density of states of a light beam propagating through ultracold atoms may be easily modified by modulating the atomic susceptibility with a light grating. This was predicted and observed in a resonantly absorbing atomic sample supporting electromagnetically induced transparency where a probe nearly resonant with a standing wave coupling beam experiences a fully developed stop-band. In the present work, a probe that is resonant with higher harmonics of the standing wave frequency in a highly asymmetric three-level Lambda-configuration or a ladder configuration, is predicted to exhibit a peculiar multipeak all-optically tunable reflection pattern. Such an unusual reflectivity spectrum is shown to be related to a suppression of the absorption akin to the Borrmann effect in the dynamical X-ray diffraction in crystals. This novel effect can actually be observed in atomic hydrogen but also in a variety of atoms, such as, for example, strontium, provided the optical lattice has been angle-tuned.
| Titolo: | Reflectivity comb in coherently dressed three-level media |
| Autori: | |
| Data di pubblicazione: | 2009 |
| Rivista: | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1080/09500340903427629 |
| Handle: | http://hdl.handle.net/11384/7292 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
http://hdl.handle.net/11384/7292
Copyright © 2021