Absorption and dispersion in probe laser in the four-level Y-type atom system

作者：Zhang LY; Liu ZD^*

来源：Acta Physica Sinica, 2005, 54(8): 3641-3645.

• electromagnetically induced transparency
• spontaneous emission
• quantum interference

In this paper we have calculated the absorption and dispersion of the probe laser in the four-level Y-type atom system at low light levels and found that if the external light fields are changed, the system would exhibit an electromagnetically induced transparency effect. At the same time,we found that the system could also exhibit enhancement accompanied with a big negative refractive index,and if the light field phase is changed,the absorption and dispersion of the probe laser are also changed.

• 出版日期2005-8
• 单位南昌大学