Simulation of Optoelectronic Devices from Coupled Two Photonic Hetrostructures

We consider that a photonic crystal is embedded with two dielectric slabs. The size of the slabs is of the order of nanometer size. The system is called a double photonic heterostructure. We use the transfer matrix method to calculate the energy eigenvalues of photons. It is found that photons can tunnel from one heterostructure to another. The heterostructures are doped with quantum dots which has four electronic states. We have performed the numerical simulations of the two-photon absorption in the presence of a probe and a pump laser fields. It is found that when the heterostructures are far away with each other we observed a transparent state in the two-photon absorption spectrum. However, when the wires are close to each other we found two transparent states in the two photon process. This phenomenon is due to the coupling between two heterostructures. We anticipate that the findings of the present research can be useful to make new types of optoelectronic devices.