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Optically Tunable Gratings Based on Coherent Population Oscillation.

ABSTRACT: We theoretically study the optically tunable gratings based on a L-type atomic medium using coherent population oscillations from the angle of reflection and transmission of the probe field. Adopting a standing-wave driving field, the refractive index of the medium as well as the absorption are periodically modified. Consequently, the Bragg scattering causes the effective reflection. We show that different intensities of the control field lead to three types of reflection profile which actually correspond to different absorption/amplification features of the medium. We present a detailed analyses about the influence of amplification on the reflection profile as well. The coherent population oscillation is robust to the dephasing effect, and such induced gratings could have promising applications in nonlinear optics and all-optical information processing.

SUBMITTER: Zhang XJ

PROVIDER: S-EPMC5931600 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature

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Optically Tunable Gratings Based on Coherent Population Oscillation.

Zhang Xiao-Jun XJ Wang Hai-Hua HH Wang Lei L Wu Jin-Hui JH

Scientific reports 20180501 1

We theoretically study the optically tunable gratings based on a L-type atomic medium using coherent population oscillations from the angle of reflection and transmission of the probe field. Adopting a standing-wave driving field, the refractive index of the medium as well as the absorption are periodically modified. Consequently, the Bragg scattering causes the effective reflection. We show that different intensities of the control field lead to three types of reflection profile which actually ...[more]

PMID: 29717173

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