Two-dimensional gain cross-grating based on spatial modulation of active Raman gain

doi:10.1088/1674-1056/25/11/114205

Abstract Based on the spatial modulation of active Raman gain, a two-dimensional gain cross-grating is theoretically proposed. As the probe field propagates along the z direction and passes through the intersectant region of the two orthogonal standing-wave fields in the x-y plane, it can be effectively diffracted into the high-order directions, and the zero-order diffraction intensity is amplified at the same time. In comparison with the two-dimensional electromagnetically induced cross-grating based on electromagnetically induced transparency, the two-dimensional gain cross-grating has much higher diffraction intensities in the first-order and the high-order directions. Hence, it is more suitable to be utilized as all-optical switching and routing in optical networking and communication.

Keywords: electromagnetically induced grating gain cross-grating active Raman gain

Received: 27 November 2015
Revised: 27 May 2016
Accepted manuscript online:

PACS:	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)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11274112 and 11347133).

Corresponding Authors: Shang-Qing Gong
E-mail: sqgong@ecust.edu.cn1

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Li Wang(王丽), Feng-Xue Zhou(周凤雪), Hong-Ju Guo(郭洪菊), Yue-Ping Niu(钮月萍), Shang-Qing Gong(龚尚庆) Two-dimensional gain cross-grating based on spatial modulation of active Raman gain 2016 Chin. Phys. B 25 114205

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Two-dimensional gain cross-grating based on spatial modulation of active Raman gain

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