中国物理B ›› 2016, Vol. 25 ›› Issue (12): 124211-124211.doi: 10.1088/1674-1056/25/12/124211

• SPECIAL TOPIC—Soft matter and biological physics (Review) • 上一篇    下一篇

Microscale vortex laser with controlled topological charge

Xing-Yuan Wang(王兴远), Hua-Zhou Chen(陈华洲), Ying Li(黎颖), Bo Li(李波), Ren-Min Ma(马仁敏)   

  1. 1. State Key Laboratory for Mesoscopic Physics and School of Physics, Peking University, Beijing 100871, China;
    2. Collaborative Innovation Center of Quantum Matter, Beijing, China
  • 收稿日期:2016-10-20 修回日期:2016-11-07 出版日期:2016-12-05 发布日期:2016-12-05
  • 通讯作者: Ren-Min Ma E-mail:renminma@pku.edu.cn
  • 基金资助:

    Project supported by the "Youth 1000 Talent Plan" Fund, Ministry of Education of China (Grant No. 201421) and the National Natural Science Foundation of China (Grant Nos. 11574012 and 61521004).

Microscale vortex laser with controlled topological charge

Xing-Yuan Wang(王兴远)1, Hua-Zhou Chen(陈华洲)1, Ying Li(黎颖)1, Bo Li(李波)1, Ren-Min Ma(马仁敏)1,2   

  1. 1. State Key Laboratory for Mesoscopic Physics and School of Physics, Peking University, Beijing 100871, China;
    2. Collaborative Innovation Center of Quantum Matter, Beijing, China
  • Received:2016-10-20 Revised:2016-11-07 Online:2016-12-05 Published:2016-12-05
  • Contact: Ren-Min Ma E-mail:renminma@pku.edu.cn
  • Supported by:

    Project supported by the "Youth 1000 Talent Plan" Fund, Ministry of Education of China (Grant No. 201421) and the National Natural Science Foundation of China (Grant Nos. 11574012 and 61521004).

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摘要：

A microscale vortex laser is a new type of coherent light source with small footprint that can directly generate vector vortex beams. However, a microscale laser with controlled topological charge, which is crucial for virtually any of its application, is still unrevealed. Here we present a microscale vortex laser with controlled topological charge. The vortex laser eigenmode was synthesized in a metamaterial engineered non-Hermitian micro-ring cavity system at exceptional point. We also show that the vortex laser cavity can operate at exceptional point stably to lase under optical pumping. The microscale vortex laser with controlled topological charge can serve as a unique and general building block for next-generation photonic integrated circuits and coherent vortex beam sources. The method we used here can be employed to generate lasing eigenmode with other complex functionalities.

关键词: exceptional point, non-Hermitian system, orbital angular momentum, vortex laser

Abstract:

A microscale vortex laser is a new type of coherent light source with small footprint that can directly generate vector vortex beams. However, a microscale laser with controlled topological charge, which is crucial for virtually any of its application, is still unrevealed. Here we present a microscale vortex laser with controlled topological charge. The vortex laser eigenmode was synthesized in a metamaterial engineered non-Hermitian micro-ring cavity system at exceptional point. We also show that the vortex laser cavity can operate at exceptional point stably to lase under optical pumping. The microscale vortex laser with controlled topological charge can serve as a unique and general building block for next-generation photonic integrated circuits and coherent vortex beam sources. The method we used here can be employed to generate lasing eigenmode with other complex functionalities.

Key words: exceptional point, non-Hermitian system, orbital angular momentum, vortex laser

中图分类号:  (Semiconductor lasers; laser diodes)

  • 42.55.Px
42.55.Sa (Microcavity and microdisk lasers) 42.60.By (Design of specific laser systems)