CAJ | 학술논문

通过外加驱动场并使其与四能级原子系统能级共振,能够改变四能级原子系统中的色散和吸收特性。研究表明,选择适当的参数,探测光场可被放大,即有增益产生。同时,探测光场增益-吸收系数表现为增益。这种现象正好和探测光场的慢光现象对应起来,即增益辅助的慢光。这样,在该种原子系统中,可以达到对探测光场有效观测的目的。而这种慢光传输的现象在高保真光纤延迟线和现代光学信息处理方面有潜在的应用价值。
통과외가구동장병사기여사능급원자계통능급공진,능구개변사능급원자계통중적색산화흡수특성。연구표명,선택괄당적삼수,탐측광장가피방대,즉유증익산생。동시,탐측광장증익-흡수계수표현위증익。저충현상정호화탐측광장적만광현상대응기래,즉증익보조적만광。저양,재해충원자계통중,가이체도대탐측광장유효관측적목적。이저충만광전수적현상재고보진광섬연지선화현대광학신식처리방면유잠재적응용개치。
The properties of the dispersion and the absorption of a four-level system can be changed through an adding driving field and the resonance of this field and the four-level atomic system.It is found that,when proper parameters are chosen,the probe light field is enlarged,that is,there is a gain appearing and the gain-absorption coefficient turns to be gain at the same time.These phenomena perfectly correspond to the sub-luminal propagation of the probe field with gain.It is concluded that probe light field can be observed effectively in the same atomic system and the slow light propagation is of great application in highfidelity optical delay lines and modern optical information processing.