Figure 1
From: Organic Single-Crystal Light-Emitting Transistor Coupling with Optical Feedback Resonators
Design principle of the organic single-crystal device with optical feedback resonators.
(a) Conceptual representation of the optically-coupled organic single-crystal light-emitting transistor with an optical feedback resonator. Red lines depict propagating light inside the single-crystal waveguide and feedback resonator. Black arrows indicate optical coupling between the two components. (b) An optical coupling simulation of the design concept. Magnetic field intensity of propagating light (λ = 576 nm, corresponding to the (0–1) peak) is simulated inside an optical directional coupler, which is constructed by laminating BP3T single crystals on top of each other. In the simulation, the light is injected into the bottom crystal. Once the light reaches the area where another crystal is laminated, the light couples into the upper crystal and subsequently transferred back and forth along the propagation path. (c) A similar magnetic field intensity simulation (λ = 576 nm) is performed by considering an additional effect: the effect of the edge of the upper crystal. In addition to the light transfer into the upper crystal, another beating effect of the edge of upper crystal is expected with a higher maximum intensity.
