Unidirectional-emission, single-mode, whispering-gallery-mode microlasers

Yong-Zhen Huang; Jian-Dong Lin; Yue-De Yang; Qi-Feng Yao; Xiao-Meng Lv; Jin-Long Xiao; Yun Du

doi:10.1117/12.906110

6 February 2012 Unidirectional-emission, single-mode, whispering-gallery-mode microlasers

Yong-Zhen Huang, Jian-Dong Lin, Yue-De Yang, Qi-Feng Yao, Xiao-Meng Lv, Jin-Long Xiao, Yun Du

Proceedings Volume 8236, Laser Resonators, Microresonators, and Beam Control XIV; 82360M (2012) https://doi.org/10.1117/12.906110
Event: SPIE LASE, 2012, San Francisco, California, United States

Abstract

Unidirectional-emission microlasers are greatly demanded for photonic integrated circuits and optical interconnection. In this paper, the mode characteristics of circular and coupled-circular microresonators with a bus waveguide are numerically simulated by finite-difference time-domain technique. For a circular microresonator connected with a bus waveguide, coupled-mode between two whispering-gallery modes can have high mode Q factor for realizing unidirectional-emission lasing. In addition, symmetry and antisymmetry coupled modes are analyzed for the coupledcircular microresonator with a middle bus waveguide. Furthermore, the output characteristics of a coupled-circular microlaser, which is fabricated by standard photolithography and inductively-coupled-plasma (ICP) etching techniques, are reported. Single mode operation is realized for the coupled-circular microlaser with a radius of 20 μm and a 2-μmwidth bus waveguide.

Citation Download Citation

Yong-Zhen Huang, Jian-Dong Lin, Yue-De Yang, Qi-Feng Yao, Xiao-Meng Lv, Jin-Long Xiao, and Yun Du "Unidirectional-emission, single-mode, whispering-gallery-mode microlasers", Proc. SPIE 8236, Laser Resonators, Microresonators, and Beam Control XIV, 82360M (6 February 2012); https://doi.org/10.1117/12.906110

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