Fig. 3
From: Self-induced transparency in a perfectly absorbing chiral second-harmonic generator
Unidirectional reflector in a one-port perfect absorber. (a) and (b) Schematic diagrams of unidirectional reflectors in a one-port perfect absorber with an incident beam from left and right ports, respectively. \(\small {\gamma }_{1}\) : scattering loss, \(\small {\gamma }_{c1}\) : coupling rate. The linear coupling rates between CW and CCW are not equal in the current case, i.e. \(\small {\text{J}}_{12}\ne {\text{J}}_{21}\) in the current microcavity. Inset in (a): top-view picture of the microcavity device. (c) and (d) Their corresponding transmission and reflection spectra from left and right, respectively, show the same transmission from both ports, but two distinguished reflection spectra