Coherently induced grating in refractive index enhanced medium

doi:10.1088/1674-1056/26/12/124209

中国物理B ›› 2017, Vol. 26 ›› Issue (12): 124209-124209.doi: 10.1088/1674-1056/26/12/124209

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Coherently induced grating in refractive index enhanced medium

Zhuan-Zhuan Liu(刘撰撰), Yu-Yuan Chen(陈煜远), Jia-Yu Yuan(原佳宇), Ren-Gang Wan(万仁刚)

School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China

收稿日期:2017-04-05 修回日期:2017-07-15 出版日期:2017-12-05 发布日期:2017-12-05
通讯作者: Ren-Gang Wan E-mail:wrg@snnu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11204367 and 61475191) and the Fundamental Research Funds for the Central Universities, China (Grant Nos. GK201503022 and GK201601008).

Coherently induced grating in refractive index enhanced medium

Zhuan-Zhuan Liu(刘撰撰), Yu-Yuan Chen(陈煜远), Jia-Yu Yuan(原佳宇), Ren-Gang Wan(万仁刚)

School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China

Received:2017-04-05 Revised:2017-07-15 Online:2017-12-05 Published:2017-12-05
Contact: Ren-Gang Wan E-mail:wrg@snnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11204367 and 61475191) and the Fundamental Research Funds for the Central Universities, China (Grant Nos. GK201503022 and GK201601008).

摘要/Abstract

摘要： We demonstrate a scheme for coherently induced grating based on a mixture of two three-level atomic species interacting with two standing-wave fields. As a result of interaction between the absorptive and amplified Raman resonances, the refractive index of the medium can be enhanced and modulated periodically. Then a sinusoidal grating, which can diffract the probe field into high-order directions, is coherently formed in the medium. The proposed scheme is theoretically investigated in a mixture of atomic isotopes of rubidium. The results show that the diffraction efficiency depends strongly on the two two-photon detunings of the two Raman transitions and the intensities of the two driving standing-wave fields. The proposed electromagnetically induced grating scheme may be applied to the all-optical switching and beam splitting in optical networking and communication.

关键词: refractive index enhancement, electromagnetically induced grating, electromagnetically induced transparency, active Raman gain

Abstract: We demonstrate a scheme for coherently induced grating based on a mixture of two three-level atomic species interacting with two standing-wave fields. As a result of interaction between the absorptive and amplified Raman resonances, the refractive index of the medium can be enhanced and modulated periodically. Then a sinusoidal grating, which can diffract the probe field into high-order directions, is coherently formed in the medium. The proposed scheme is theoretically investigated in a mixture of atomic isotopes of rubidium. The results show that the diffraction efficiency depends strongly on the two two-photon detunings of the two Raman transitions and the intensities of the two driving standing-wave fields. The proposed electromagnetically induced grating scheme may be applied to the all-optical switching and beam splitting in optical networking and communication.

Key words: refractive index enhancement, electromagnetically induced grating, electromagnetically induced transparency, active Raman gain

中图分类号: (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)

42.50.Gy

42.65.An (Optical susceptibility, hyperpolarizability) 42.25.Fx (Diffraction and scattering)

刘撰撰, 陈煜远, 原佳宇, 万仁刚. Coherently induced grating in refractive index enhanced medium[J]. 中国物理B, 2017, 26(12): 124209-124209.

Zhuan-Zhuan Liu(刘撰撰), Yu-Yuan Chen(陈煜远), Jia-Yu Yuan(原佳宇), Ren-Gang Wan(万仁刚). Coherently induced grating in refractive index enhanced medium[J]. Chin. Phys. B, 2017, 26(12): 124209-124209.

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Coherently induced grating in refractive index enhanced medium

Coherently induced grating in refractive index enhanced medium

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