Electromagnetically induced grating in a four-level tripod-type atomic system

doi:10.1088/1674-1056/23/7/074204

Abstract An electromagnetically induced grating in a four-level tripod-type atomic system is studied theoretically. By virtue of a weak standing-wave signal field, the phase modulation effectively diffracts a weak probe field into the first-order direction. By changing the weak signal field, the diffraction of the weak probe field can be modulated in real time, and a first-order diffraction efficiency of more than 32% can be obtained with proper parameters. Such a system has a potential application in an all-optical switch controlled by a weak optical signal.

Keywords: electromagnetically induced grating phase modulation first-order diffraction efficiency

Received: 18 November 2013
Revised: 24 February 2014
Accepted manuscript online:

PACS:	42.50.Gy	(Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)
	42.65.An	(Optical susceptibility, hyperpolarizability)

Fund: Project supported by the National Natural Science Foundation of China (Grants Nos. 11004126 and 61275212), the Natural Science Foundation of Shanxi Province, China (Grant No. 2011021003-1), and the National Basic Research Program of China (Grant No. 2010CB923102).

Corresponding Authors: Dong Ya-Bin
E-mail: ybdong@sxu.edu.cn

About author: 42.50.Gy; 42.65.An

Cite this article:

Dong Ya-Bin (董雅宾), Guo Yao-Hua (郭耀华) Electromagnetically induced grating in a four-level tripod-type atomic system 2014 Chin. Phys. B 23 074204

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Electromagnetically induced grating in a four-level tripod-type atomic system

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