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Phase control of all-optical switching based on spontaneously generated coherence in a three-level Λ-type atomic system

  • Regular Article – Optical Phenomena and Photonics
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Abstract

Controllable all-optical switching by relative phase and spontaneously generated coherence in a three-level Λ-type atomic system is our aim in this study. We have generated a near-square probe pulse train with a similar modulation period through periodic modulation of the relative phase or coupling field intensity. Results show that the spontaneously generated coherence and phase range have a strong influence on the efficiency and shape of the switching pulse. Furthermore, the phase switching performance is enhanced as spontaneously generated coherence increases with incoherent pumping. In addition, synchronous or asynchronous switching of the probe pulse is observed in different phase domains (0–π or π–2π). The studied scheme may be helpful for use in the design of optical switching devices in optical communications.

Graphical abstract

Pulse propagation in the EIT medium.

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Data Availability Statement

This manuscript has no associated data or the data will not be deposited. [Authors' comment: No datasets were generated or analyzed during the current study. The results are based on the theoretical study.]

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Acknowledgements

Financial support from the Ministry of Education and Training under Grant No. B2018-TDV-01SP.

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Authors and Affiliations

  1. Ho Chi Minh City University of Food Industry, Ho Chi Minh City, Vietnam

    Nguyen Thi Thu Hien, Nguyen Tuan Anh & Hoang Minh Dong

  2. Vinh University, 182 Le Duan Street, Vinh City, Vietnam

    Nguyen Thi Thu Hien, Nguyen Huy Bang, Dinh Xuan Khoa, Le Van Doai & Ho Hai Quang

Authors
  1. Nguyen Thi Thu Hien
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  2. Nguyen Tuan Anh
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  3. Nguyen Huy Bang
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  4. Dinh Xuan Khoa
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Contributions

NTTH and HMD created the research model, developed the theory and performed calculations. All authors co-wrote the paper, discussed the results and contributed equally to the final manuscript.

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Correspondence to Hoang Minh Dong.

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Hien, N.T.T., Anh, N.T., Bang, N.H. et al. Phase control of all-optical switching based on spontaneously generated coherence in a three-level Λ-type atomic system. Eur. Phys. J. D 76, 215 (2022). https://doi.org/10.1140/epjd/s10053-022-00540-1

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