Spontaneous emission spectra and simulating multiple spontaneous generation coherence in a five-level atomic medium

Autor:	Li Jia-Hua, Chen Ai-Xi, Qi Chun-Chao, Liu Ji-Bing
Rok vydání:	2006
Předmět:	Physics chemistry.chemical_element Atomic and Molecular Physics and Optics Spectral line Rubidium chemistry Atomic theory Atomic model Spontaneous emission Physics::Atomic Physics Emission spectrum Atomic physics Hyperfine structure Coherence (physics)
Zdroj:	Physical Review A. 74
ISSN:	1094-1622 1050-2947
Popis:	We investigate the features of the spontaneous emission spectra in a coherently driven cold five-level atomic system by means of a radio frequency (rf) or microwave field driving a hyperfine transition within the ground state. It is shown that a few interesting phenomena such as spectral-line narrowing, spectral-line enhancement, spectral-line suppression, and spontaneous emission quenching can be realized by modulating the frequency and intensity of the rf-driving field in our system. In the dressed-state picture of the coupling and rf-driving fields, we find that this coherently driven atomic system has three close-lying levels so that multiple spontaneously generated coherence (SGC) arises. Our considered atomic model can be found in real atoms, such as rubidium or sodium, so a corresponding experiment can be done to observe the expected phenomena related to SGC reported by Fountoulakis et al. [Phys. Rev. A 73, 033811 (2006)], since no rigorous conditions are required.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7c4bd069f86361d156f5d0da854f9ba1 https://doi.org/10.1103/physreva.74.033816 Zobrazit plný text záznamu