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Laser Physics

Three-dimensional control of the light propagation in a defect photonic crystal

J Bravo A, A P Aslla Q, Yersi-Luis Huamán-Romaní, M V Seminario M, M G Sánchez P

Published Aug 21, 2023• 1 citation
Publisher

Abstract

Abstract In this paper, we have proposed a new model for controlling the light propagation in a defect photonic crystal structure with a dispersive defect layer. The defect layer consists of a four-level quantum wells interacts by two optical vortex lights. Here, a weak signal light can be generated due to the four-wave mixing mechanism, and this led to phase dependent of the medium. By intensity modulations of the applied lights, we study the 3D properties of the transmitted, reflected and absorption spectrums of the incident light from defect photonic crystal. We have shown that via azimuthal modulations of the optical vortex light the incident light can be absorbed or amplified easily.

DOI
10.1088/1555-6611/acee61

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Abstract In this paper, we have proposed a new model for controlling the light propagation in a defect photonic crystal structure with a dispersive defect layer. The defect layer consists of a four-level quantum wells interacts by two optical vortex lights. Here, a weak signal light can be generated due to the four-wave mixing mechanism, and this led to phase dependent of the medium. By intensity modulations of the applied lights, we study the 3D properties of the transmitted, reflected and absorption spectrums of the incident light from defect photonic crystal. We have shown that via azimuthal modulations of the optical vortex light the incident light can be absorbed or amplified easily.
Abstract The present study aims to investigate the transmitted and reflected light beams from a one-dimensional defect photonic crystal (1DPC) composed of a three-level ladder-type quantum system. The lower leg of the ladder scheme is driven by a weaker probe beam, while the upper leg is driven by a stronger control beam. Unlike natural atoms, this type of model with broken symmetry permits the generation of a sum-frequency signal beam between the majority of higher and lower quantum states, resulting in the formation of a cyclic closed-loop arrangement for the interaction between light and matter. The Laguerre Gaussian (LG) field with strong coupling and a weak probe light interact with the quantum system. A new weak signal light is produced as a result of the system’s symmetric breakdown, and the medium becomes azimuthal dependent. We investigate the spatial dependence of the transmitted and reflected light from a defect 1DPC by using azimuthal modulation of the LG light. Additionally, we will discuss how the absorption spectrum’s spatial modulation varies with winding numbers. We discover that in certain regions, the gain can be realized without population inversion under certain specified parametric parameters.
Abstract This work explores the transmission and reflection behavior of light beams in a one-dimensional defect photonic crystal embedded with a V-type three-level atomic system, which interacts with two independent broadband squeezed reservoirs. The system is driven by a strong composite optical vortex light (COVL) field alongside a weak probe beam. Emphasis is placed on the role of COVL’s azimuthal modulation in shaping the photonic crystal’s optical response. We analyze how the winding number of the vortex light modulates the absorption spectrum and assess the influence of key system parameters, such as the coupling field intensity and incoherent pumping rate. Our results demonstrate that these factors, especially azimuthal modulation, can significantly modify the transmission spectrum, even in the regime where absorption is negligible. This study deepens our insight into light-matter interactions within structured quantum media and suggests new avenues for photonic device applications in communication and sensing.
The transmission and reflection properties of incident light in a defect dielectric structure is studied theoretically. The defect structure consists of donor and acceptor quantum dot nanostructures embedded in a photonic crystal. It is shown that the transmission and reflection properties of incident light can be controlled by adjusting the corresponding parameters of the system. The role of dipole–dipole interaction is considered as a new parameter in our calculations. It is noted that the features of transmission and reflection curves can be adjusted in the presence of dipole–dipole interaction. It is found that the absorption of weak probe light can be converted to the probe amplification in the presence of dipole–dipole interaction. Moreover, the group velocity of transmitted and reflected probe light is discussed in detail in the absence and presence of dipole–dipole interaction. Our proposed model can be used as a new all-optical devices based on photonic materials doped with nanoparticles.
The one-dimensional mirror structure photonic crystals,and when the quantum wave equation of photon was applied to one-dimensional photonic crystals were studied by quantum theory method. it could be obtained the quantum transfer matrix,the quantum transmissivity and the quantum reflectivity.The effects of the defect layer number,absorbing and active medium on the quantum transmission properties was studied,which can help to design optical filter,amplifier and attenuator. When the defect layer is inserted,the defect model appears sharp peak. With the addition of defect layer number,the number of defect model increases,and the optic filter of multiple channel can be designed. When adding absorbing medium in the defect layer,the defect model intensity becomes weaken. when adding active medium in the defect layer,the defect model intensity becomes enhanced,so the optic amplifier and attenuator can be designed.
We discuss the light pulse propagation in a one-dimensional photonic crystal doped by graphene quantum dots in a defect layer. The graphene quantum dots behave as a three-level quantum system and are driven by three coherent laser fields. It is shown that the group velocity of the transmitted and reflected pulses can be switched from subluminal to superluminal light propagation by adjusting the relative phase of the applied fields. Furthermore, it is found that by proper choice of the phase difference between applied fields, the weak probe field amplification is achieved through a one-dimensional photonic crystal. In this way, the result is simultaneous subluminal transmission and reflection.