Fig. 4: Fabricated sample and measurement set-up.
From: Observation of chiral emission enabled by collective guided resonances
a, The scanning electron microscope images of the fabricated sample show the hetero-structures PhC consisting of region A and region B from a top view. b, A detailed top view. c, A detailed side view of the undercut structure. A focused ion beam is used to cleave the PhC. d, Schematic of the experimental set-up. Iris, iris diaphragm; ND, absorptive neutral density; BS, beam splitter; L, lens; Pol, linear polarizer; M, gold-coated mirror.
