中国物理B ›› 2017, Vol. 26 ›› Issue (7): 74216-074216.doi: 10.1088/1674-1056/26/7/074216

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

Spatiotemporal evolution of continuous-wave field and dark soliton formation in a microcavity with normal dispersion

Xiaohong Hu(胡晓鸿), Wei Zhang(张伟), Yuanshan Liu(刘元山), Ye Feng(冯野), Wenfu Zhang(张文富), Leiran Wang(王擂然), Yishan Wang(王屹山), Wei Zhao(赵卫)   

  1. 1 State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
  • 收稿日期:2017-01-20 修回日期:2017-03-15 出版日期:2017-07-05 发布日期:2017-07-05
  • 通讯作者: Yishan Wang E-mail:yshwang@opt.ac.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant No.2016YFF0200702),the National Natural Science Foundation of China (Grant Nos.61690222 and 11573058),and the CAS-SAFEA International Partnership Program for Creative Research Teams.

Spatiotemporal evolution of continuous-wave field and dark soliton formation in a microcavity with normal dispersion

Xiaohong Hu(胡晓鸿)1,2,3, Wei Zhang(张伟)1, Yuanshan Liu(刘元山)1, Ye Feng(冯野)1, Wenfu Zhang(张文富)1, Leiran Wang(王擂然)1, Yishan Wang(王屹山)1,3, Wei Zhao(赵卫)1,3   

  1. 1 State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
  • Received:2017-01-20 Revised:2017-03-15 Online:2017-07-05 Published:2017-07-05
  • Contact: Yishan Wang E-mail:yshwang@opt.ac.cn
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant No.2016YFF0200702),the National Natural Science Foundation of China (Grant Nos.61690222 and 11573058),and the CAS-SAFEA International Partnership Program for Creative Research Teams.

摘要: Stable dark soliton and dark pulse formation in normally dispersive and red-detuned microcavities are investigated by numerically solving the normalized Lugiato-Lefever equation. The soliton essence is proved by fitting the calculated field intensity profile with the analytical formula of a dark soliton. Meanwhile, we find that a dark soliton can be generated either from the nonlinear evolution of an optical shock wave or narrowing of a locally broad dark pulse with smoother fronts. Explicit analytical expression is obtained to describe the oscillatory fronts of the optical shock wave. Furthermore, from the calculation results, we show that for smaller frequency detunings, e.g., α<3, in addition to the dark soliton formation, a single dark pulse with an oscillatory dip can also arise and propagate stably in the microcavity under proper pump detuning and pump strength combination. The existence region together with various field intensity profiles and the corresponding spectra of single dark pulse are demonstrated.

关键词: pulse propagation, temporal solitons, microcavities, nonlinear optics

Abstract: Stable dark soliton and dark pulse formation in normally dispersive and red-detuned microcavities are investigated by numerically solving the normalized Lugiato-Lefever equation. The soliton essence is proved by fitting the calculated field intensity profile with the analytical formula of a dark soliton. Meanwhile, we find that a dark soliton can be generated either from the nonlinear evolution of an optical shock wave or narrowing of a locally broad dark pulse with smoother fronts. Explicit analytical expression is obtained to describe the oscillatory fronts of the optical shock wave. Furthermore, from the calculation results, we show that for smaller frequency detunings, e.g., α<3, in addition to the dark soliton formation, a single dark pulse with an oscillatory dip can also arise and propagate stably in the microcavity under proper pump detuning and pump strength combination. The existence region together with various field intensity profiles and the corresponding spectra of single dark pulse are demonstrated.

Key words: pulse propagation, temporal solitons, microcavities, nonlinear optics

中图分类号:  (Optical solitons; nonlinear guided waves)

  • 42.65.Tg
42.65.-k (Nonlinear optics) 42.65.Wi (Nonlinear waveguides)