Lasing behaviour of the corner state (IMAGE)
Caption
a, Pump-power dependence of the corner state for the cavity with a = 360 nm, D = 222 nm and g = 30 nm, on a logarithmic scale. The inset shows the enlarged curve around the threshold on a linear scale. Squares represent the experimental data, and the line represents the fitted result obtained with the semiconductor laser model. β is estimated at approximately 0.25. The lasing threshold is approximately 1 μW. b, Linewidths of the corner state as a function of pump power. The inset shows the normalized PL spectra for different pump powers. The linewidth shows a clear narrowing. The linewidths and intensities are both extracted by fitting the high-resolution spectra with Lorentz peak functions.
Credit
Weixuan Zhang, Xin Xie, Huiming Hao, Jianchen Dang, Shan Xiao, Shushu Shi, Haiqiao Ni, Zhichuan Niu, Can Wang, Kuijuan Jin, Xiangdong Zhang and Xiulai Xu
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