Working principle of the topological bulk BIC laser. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Working principle of the topological bulk BIC laser.

Caption

Top-left panel: The numerical calculations of the far-field beam at different polarizations ranging from 0° to 135°. Bottom-left panel: The schematic view of the QCL device under pulsed electrical pump and the emitted laser beam. Top-right panel: The measured laser spectrum at its maximum output. The inset shows spectrum in dB scale and the side-mode suppression ratio is around 20 dB. Bottom-right panel: The probed far-field beam profile and its polarization-resolved beam profiles.

Credit

by Song Han, Jieyuan Cui, Yunda Chua, Yongquan Zeng, Liangxing Hu, Mingjin Dai, Fakun Wang, Fangyuan Sun, Song Zhu, Lianhe Li, Alexander Giles Davies, Edmund Harold Linfield, Chuan Seng Tan, Yuri Kivshar, Qi Jie Wang

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License

CC BY

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