Fitting Tool
中文/English
This tool is using for fitting the εr (relative permittivity) curve by using Drude + Lorentz models.
This tool is using for fitting the εr (relative permittivity) curve by using Drude + Lorentz models.
The optical properties of relative permittivity can be obtained in book, paper or this website
The optical properties of relative permittivity can be obtained in book, paper or this website
save the xls file : RefractiveindexINFO.xls
save the xls file : RefractiveindexINFO.xls
In this website the optical properties save as wavelength vs n,k
In this website the optical properties save as wavelength vs n,k
(The relationship of εr and n,k is : Epsilon_real part= n^2-k^2, Epsilon_imag part= 2nk)
(The relationship of εr and n,k is : Epsilon_real part= n^2-k^2, Epsilon_imag part= 2nk)
Then import the optical properties data RefractiveindexINFO.xls
Then import the optical properties data RefractiveindexINFO.xls
(1). Select the wavelength unit in "import file" (example : if select um, then the wavelength * 1e-6)
(1). Select the wavelength unit in "import file" (example : if select um, then the wavelength * 1e-6)
(2). read file, the website file use the (n, k) ==> press the 【import n,k button】
(2). read file, the website file use the (n, k) ==> press the 【import n,k button】
(3). Plot the optical properties to check if correct.
(3). Plot the optical properties to check if correct.
(4). Select the model number, parameters that will be used to fit.
(4). Select the model number, parameters that will be used to fit.
(5). To calculate, output the 【DrudeLorentz_FitOutput.Mats_Single】file while finished.
(5). To calculate, output the 【DrudeLorentz_FitOutput.Mats_Single】file while finished.
(6). Comparison of experiment data and fitting results, if not good enough, then redo (4)-(6)
(6). Comparison of experiment data and fitting results, if not good enough, then redo (4)-(6)
There are different Drude ,Lorentz models fitting results
There are different Drude ,Lorentz models fitting results
And then push the 【載入參數(Load)】button to load the DrudeLorentz_FitOutput.Mats_Single file
And then push the 【載入參數(Load)】button to load the DrudeLorentz_FitOutput.Mats_Single file
result
result
Other recommend fitting tool
Other recommend fitting tool
1.Modified Lorentz : reference
A. Deinega and S. John, “Effective optical response of silicon to sunlight in the finite-difference time-domain method,” Opt. Lett. 37, 112-114 (2012)http://www.opticsinfobase.org/ol/abstract.cfm?uri=ol-37-1-112Electromagnetic Template Library (EMTL)http://fdtd.kintechlab.com/en/fitting
2. RefFIT
http://optics.unige.ch/alexey/reffit.html