1.
Appl Opt
; 48(6): 1098-103, 2009 Feb 20.
Artigo
em Inglês
| MEDLINE
| ID: mdl-23567569
RESUMO
High-contrast coherent population trapping signals were observed on the Cs D1 line by use of a bichromatic linear polarized light (linâlin field). A maximum absorption contrast of about 10% was obtained. This was nearly twice as high as that measured with the standard configuration of bichromatic circularly polarized light (σ-σ field). The results are compared with density matrix calculations of 4 and 5 level systems.