Fig. 3: 5×5-period ultra-compact BIC laser. (IMAGE)

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

Fig. 3: 5×5-period ultra-compact BIC laser.

Caption

Fig. 3: 5×5-period ultra-compact BIC laser. Edge engineering enhances the quality factor of the BIC mode, enabling single-mode BIC lasing even in small-footprint devices. a, SEM image of the 5×5 photonic crystal array. b, Emission intensity and linewidth as a function of pumping power. c, Single-mode lasing spectrum at 10× Pth. d, Far-field emission pattern and far-field self-interference pattern of the BIC mode.

Credit

Wei Bao et al.

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