Gaussian beam incident a Negative refractive index plate
中文/English
Reference
Reference
1. 'Left-Handed' Materials Propel Spectrum Physics
1. 'Left-Handed' Materials Propel Spectrum Physics
2. Lumerical FDTD Solution
2. Lumerical FDTD Solution
3.Left-Hand material , Metalmaterial 。
3.Left-Hand material , Metalmaterial 。
J. B. Pendry, “Negative Refraction Makes a Perfect Lens,” Phys. Rev. Lett., vol. 85, no. 18, pp. 3966–3969, Oct. 2000
J. B. Pendry, “Negative Refraction Makes a Perfect Lens,” Phys. Rev. Lett., vol. 85, no. 18, pp. 3966–3969, Oct. 2000
4.Negative index metamaterials
4.Negative index metamaterials
To achieve a negative refractive index, we can excite a Gaussian beam incident into a double negative refractive (DNR) materials (permeability = -1 & permittivity = -1) . Here we can use the "Drude model"
To achieve a negative refractive index, we can excite a Gaussian beam incident into a double negative refractive (DNR) materials (permeability = -1 & permittivity = -1) . Here we can use the "Drude model"
Simulation parameters:
Simulation parameters:
DNR plate thickness = 600 nm
DNR plate thickness = 600 nm
Incident wavelength = 200 nm
Incident wavelength = 200 nm
Gaussian beam size = 200 nm
Gaussian beam size = 200 nm
Define Parameters
Define Parameters
1. Selected the simulation dimension.
1. Selected the simulation dimension.
2. Define total x, y, z length that equal to CAD, and then set a appropriate resolution.
2. Define total x, y, z length that equal to CAD, and then set a appropriate resolution.
3. Press【建立網格 Cad to Grids (Create)】button to create simulation grids.
3. Press【建立網格 Cad to Grids (Create)】button to create simulation grids.
A. Define the boundary conditions
A. Define the boundary conditions
B. Press the【創建 (Create)】button => Create the total grid size (Include the boundary condition & add space)
B. Press the【創建 (Create)】button => Create the total grid size (Include the boundary condition & add space)
1. Checked the simulation material that will be used
2. Input the builtin function
3. Press the run button to execute the code
4. Checked out the geometries
5. If correct! then Press 【輸出 output】button to output the *.csv files.
the builtin function geometries variable are
gdx is (grid) dx value, gdy = dy. gdz = dz;
ib= X grids, jb= Y grids, kb= Z grids;
icenter= ib/2; jcenter= jb/2; kcenter=kb/2;
%=================矩形 Brick===========================xstart=1*gdx;xend=ib*gdx;ystart=1*gdy;yend=1*gdy;zstart=kcenter*gdz-300e-9;zend=kcenter*gdz+300e-9;nindex=1^2;sigma=0;choice='EM_Model1'; %E_Iso,PEC,M_Iso,PMC,E_Model1,M_Model1,EM_Model1gridtype=-1; %Iso_Brick(choice,gridtype,nindex,sigma,xstart,xend,ystart,yend,zstart,zend)%=================矩形 Brick===========================
double negative refractive (DNR) materials (permeability = -1 & permittivity = -1)
double negative refractive (DNR) materials (permeability = -1 & permittivity = -1)
To use the Drude model, if we define epsilon_infinity=1, , gd=0, then epsilonr=1-wd^2/w^2; and then obtain wd=sqrt(2)*w
if let the incident wavelength = 200 nm, can get wd=sqrt(2)*pi/3e8/200e-9 = 1.332864881447510e+016。
take this value into both E-Models & M_Models, Using the Drude model.
