Fig. 2: Spectral characteristics of vdW CLS.
From: Van der Waals photonic integrated circuit with coherent light generation
a PL spectrum of cavity with d = 500 nm, h = 200 nm, and ho = 1000 nm under 1000 W cm-2 pumping. Inset is gain coefficient g spectrum of cavity-embedded WS2. b Polarization of TE1,57 mode and exciton peak in (a). c High-resolution PL spectra of TE1,57 under various pump power densities. d Light-light curve. e Linewidth narrowing under various pump power densities. The error bars represent the deviations from bi-Lorentzian fittings. f Lorentzian fits of TE1,57 below and above threshold.
