Title :
The Phase Modulation of the Electromagnetically Induced Transparency in a Four-Level System
Author :
Yang, Lijun ; Zhao, Min ; Zhang, Lianshui
Author_Institution :
Coll. of Phys. Sci. & Technol., Hebei Univ., Baoding, China
Abstract :
we present a theoretical study on a four-level atom system with a triplet ground state and an exicited state driven by two coupling fields, a rf field and a probe field. The absorption spectrum is characterized by two EIT. It can be found that the linewidth of the two EIT change with the relative phase of the two coupling fields. The linewidth reaches the minimum when the relative phase is equal to . It is more easy to modulate the linewidth of EIT by this means.
Keywords :
atom optics; optical modulation; phase modulation; absorption spectrum; coupling fields; electromagnetically induced transparency; four-level atom system; phase modulation; triplet ground state; Control systems; Educational institutions; Electromagnetic coupling; Electromagnetic wave absorption; Frequency; Optical control; Phase modulation; Probes; Shape; Stationary state;
Conference_Titel :
Photonics and Optoelectronic (SOPO), 2010 Symposium on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-4963-7
Electronic_ISBN :
978-1-4244-4964-4
DOI :
10.1109/SOPO.2010.5504285
