Controlling Band Gap of One Dimensional Photonic Crystals via the Nonlinear Characteristic of Layers

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JAFARI A.; Rahmatnezamabad a.

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Journal: Advanced Defense Science and Technology Year:2019 | Volume:10 | Issue:2 Page(s): 169-175

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Title

Controlling Band Gap of One Dimensional Photonic Crystals via the Nonlinear Characteristic of Layers

Author(s)

JAFARI A. | Rahmatnezamabad a. | Issue Writer Certificate

Keywords

Photonic CrystalsQ1

Band StructureQ1

Transfer Matrix MethodQ1

Nonlinear OpticsQ1

Abstract

In this paper, Band Structure of one-dimensional photonic crystal consisting of two-layer dielectrics is calculated (The first layer is the vacuum and the second layer is ZnSe). Then, the photonic crystal Band Structure bynonlinear characteristics of layers and different intensity radiation values-is calculated. The refractive index modification is applied for each layer and its effect on the electrical permittivity coefficients is calculated. Since the transmission and reflection coefficients of photonic crystal depends on the layer electrical permittivity, the Band Structure of crystal changes as the layer electrical permittivity change. The results show that by increasing the light radiation intensity, the frequency of the band gap branches decreases, therefore in TE and TM polarizations band gap branches shift slightly to lower frequencies. In addition it is shown that new band gap branches appeared at higher frequencies which indicates that crystal Band Structure can be controlled by the intensity of the radiation field. In order to demonstrate the practical ability of Nonlinear Optics, the Band Structure of photonic crystal is calculated in both regimes (linear and Nonlinear Optics) and compared with each other. These structures can be used as anti-reflective coatings that reduce reflections from the surface. In fact, by covering war devices with band gap controllable nonlinear optical Photonic Crystals, they can be hidden from the enemy's radar view.

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APA: Copy

JAFARI, A., & Rahmatnezamabad, a.. (2019). Controlling Band Gap of One Dimensional Photonic Crystals via the Nonlinear Characteristic of Layers. (JOURNAL OF ADVANCED DEFENCE SCIENCE AND TECHNOLOGY) JOURNAL OF PASSIVE DEFENCE SCIENCE AND TECHNOLOGY, 10(2 ), 169-175. SID. https://sid.ir/paper/167277/en

Vancouver: Copy

JAFARI A., Rahmatnezamabad a.. Controlling Band Gap of One Dimensional Photonic Crystals via the Nonlinear Characteristic of Layers. (JOURNAL OF ADVANCED DEFENCE SCIENCE AND TECHNOLOGY) JOURNAL OF PASSIVE DEFENCE SCIENCE AND TECHNOLOGY[Internet]. 2019;10(2 ):169-175. Available from: https://sid.ir/paper/167277/en

IEEE: Copy

A. JAFARI, and a. Rahmatnezamabad, “Controlling Band Gap of One Dimensional Photonic Crystals via the Nonlinear Characteristic of Layers,” (JOURNAL OF ADVANCED DEFENCE SCIENCE AND TECHNOLOGY) JOURNAL OF PASSIVE DEFENCE SCIENCE AND TECHNOLOGY, vol. 10, no. 2 , pp. 169–175, 2019, [Online]. Available: https://sid.ir/paper/167277/en

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