Fig. 2: Laser performance of the 20×20-period photonic crystal. (IMAGE)

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

Fig. 2: Laser performance of the 20×20-period photonic crystal.

Caption

Fig. 2: Laser performance of the 20×20-period photonic crystal. Under the pre-merging BIC condition, the device maintains robust single-mode lasing over a wide pump range. a, SEM image of the 20×20 photonic crystal array. b, BIC mode wavelength and lasing threshold as a function of air-hole diameter. c, Experimental photonic crystal band structures from before to after merging. d, Normalized lasing spectra from before to after merging.

Credit

Wei Bao et al.

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