Effect of Phase Modulation on Electromagnetically Induced Grating in a Five-Level M-Type Atomic System
Li Wang1,2 , Yi-Hong Qi1 , Li Deng 1 , Yue-Ping Niu1 , Shang-Qing Gong1** , Hong-Ju Guo3
1 Department of Physics, East China University of Science and Technology, Shanghai 2002372 School of Physics and Electronics Engineering, Nanyang Normal College, Nanyang 4730613 Shanghai Publishing and Printing College, Shanghai 200093
Abstract ：We theoretically investigate the phenomena of electromagnetically induced grating in an M-type five-level atomic system. It is found that a weak field can be effectively diffracted into high-order directions using a standing wave coupling field, and different depths of the phase modulation can disperse the diffraction light into different orders. When the phase modulation depth is approximated to the orders of $\pi$, $2\pi$ and $3\pi$, the first-, second- and third-order diffraction intensity reach the maximum, respectively. Thus we can take advantage of the phase modulation to control the probe light dispersing into the required high orders.
收稿日期: 2017-03-30
出版日期: 2017-06-23
:
42.50.-p
(Quantum optics)
42.50.Gy
(Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)
42.50.Nn
(Quantum optical phenomena in absorbing, amplifying, dispersive and conducting media; cooperative phenomena in quantum optical systems)
42.81.Dp
(Propagation, scattering, and losses; solitons)
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2017, Vol. 34 
