Simulation of light trapping in waveguide structures containing graphene and negative index materials

العناوين الأخرى

نمذجة حصر الضوء في تركيبات أدلة ضوئية و موجية تحتوي على الجرافين

مقدم أطروحة جامعية

al-Ashal, Adham Muhammad Id al-Rahman

مشرف أطروحة جامعية

Shabat, Muhammad Musa

الجامعة

الجامعة الإسلامية

الكلية

كلية العلوم

القسم الأكاديمي

قسم الفيزياء

دولة الجامعة

فلسطين (قطاع غزة)

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2017

الملخص الإنجليزي

Graphene is a monolayer material of carbon atoms.

It is two-dimensional and has a hexagonal lattice structure (also called honeycomb).It is the thinnest known material among all other materials so far, equivalent to a thickness of one carbon atom only.

However, it is considered to be one of the strongest known materials.

Graphene has attracted a high level of research interest because of its electronic transport and optical properties.

In this study, a new light trapping waveguide structure is proposed.

The proposed structure consists of a multilayer slab waveguide structure.

Two of the layers are considered as a Graphene material represented by an infinitesimally thin conducting Graphene layer up and down left hand material (LHM) layer .

The dispersion relation for the waveguide structure for both transverse magnetic (TM) and transverse electric (TE) modes in visible light frequencies ranges is investigated.

The attenuation of the effective refractive index to variations in the refractive index of the cladding is obtained.

This thesis has concluded that very strong attenuation which increases with the increasing of the mode's number and increases with the decreasing of the film thickness .

Also the attenuations are computed and illustrated versus the wavelength of the incident waves in the visible regions for both TE and TM waves.

LHM is better absorber of higher TE modes than that of higher TM modes and the best absorption is attained at shorter wavelengths in the visible region.

Moreover, the normalized electric profile of TE waves and normalized magnetic profile of TM waves shows more stronger electric field and magnetic field respectively.

التخصصات الرئيسية

الفيزياء

عدد الصفحات

81

قائمة المحتويات

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-902547