Fig. 2: Design and fabrication of BIC polaritons.
From: Polariton condensate far-detuned from exciton resonance in WS2 bound states in the continuum
a Angle-resolved spectra of FDTD simulation (left) and experiment (right) for multilayered WS2 BIC cavity. Blue and red dashed lines for polariton and photon, respectively. Inset: the scanning electron microscope (SEM) image of the fabricated multilayered WS2 BIC cavity. Scale bar, 500 nm. b Side views of the magnitude of electric field profiles (x component) of the at-Γ BIC [kx = 0°] and off-Γ mode [kx = 3°]. c Q- factor of the BIC mode as a function of kx. Inset: the normalized electric field in the x and y directions on the surface of a unit cell. d Simulated azimuthal angle map of state of polarization on BIC mode. Measured polarization-resolved monochromatic image (1.43 eV) in k-space.
