1.
Phys Rev Lett
; 84(18): 4080-3, 2000 May 01.
Article
in English
| MEDLINE
| ID: mdl-10990615
ABSTRACT
Dark resonance switching among three-laser interactions in a four-level system is observed by using an enhanced nondegenerate four-wave mixing technique. This coherence switching mechanism is based on simultaneous suppression and enhancement of two-photon absorption and has a novel application to high-speed optical switches.