Controlling the Bandgaps of One-Dimensional TiO₂/SiO₂, TiO₂/SnO₂, and SiO₂/SnO₂ Photonic Crystals Using the Transfer Matrix Method  

作　　者：Fatimah Alamrani Edreese Alsharaeh Fatimah Alamrani;Edreese Alsharaeh(College of Science and General Studies, Alfaisal University, Riyadh, Saudi Arabia)

机构地区：[1]College of Science and General Studies, Alfaisal University, Riyadh, Saudi Arabia

出　　处：《Optics and Photonics Journal》2022年第7期171-189,共19页光学与光子学期刊（英文）

摘　　要：One-dimensional photonic crystals (1D PhCs) have a unique ability to control the propagation of light waves, however certain classes of 1D oxides remain relatively unexplored for use as PhCs. Specifically, there has not been a comparative study of the three different 1D PhC structures to compare the influence of layer thickness, number, and refractive index on the ability of the PhCs to control light transmission. Herein, we use the transfer matrix method (TMM) to theoretically examine the transmission of 1D PhCs composed of layers of TiO₂/SiO₂, TiO₂/SnO₂, SiO₂/SnO₂, and combinations of the three with various top and bottom layer thicknesses to cover a substantial region of the electromagnetic spectrum (UV to NIR). With increasing layer numbers for TiO₂/SiO₂ and SiO₂/SnO₂, the edges became sharper and wider and the photonic bandgap width increased. Moreover, we demonstrated that PhCs with significantly thick TiO₂/SiO₂ layers had a high transmittance for a wide bandgap, allowing for wide-band optical filter applications. These different PhC architectures could enable a variety of applications, depending on the properties needed.One-dimensional photonic crystals (1D PhCs) have a unique ability to control the propagation of light waves, however certain classes of 1D oxides remain relatively unexplored for use as PhCs. Specifically, there has not been a comparative study of the three different 1D PhC structures to compare the influence of layer thickness, number, and refractive index on the ability of the PhCs to control light transmission. Herein, we use the transfer matrix method (TMM) to theoretically examine the transmission of 1D PhCs composed of layers of TiO₂/SiO₂, TiO₂/SnO₂, SiO₂/SnO₂, and combinations of the three with various top and bottom layer thicknesses to cover a substantial region of the electromagnetic spectrum (UV to NIR). With increasing layer numbers for TiO₂/SiO₂ and SiO₂/SnO₂, the edges became sharper and wider and the photonic bandgap width increased. Moreover, we demonstrated that PhCs with significantly thick TiO₂/SiO₂ layers had a high transmittance for a wide bandgap, allowing for wide-band optical filter applications. These different PhC architectures could enable a variety of applications, depending on the properties needed.

关 键 词：One-Dimensional Photonic Crystal Photonic Bandgap Transfer Matrix Method Optical Filter Metal Oxides 

分 类 号：R73[医药卫生—肿瘤]