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en:fitting [2012/10/15 18:35]
deinega
en:fitting [2012/10/15 18:37] (current)
deinega
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*modified Lorentz term <tex>\frac{\Delta \varepsilon (\omega_p^2 - i\omega\gamma_p')}{\omega_p^2-2i\omega\gamma_p-\omega^2}</tex>   *modified Lorentz term <tex>\frac{\Delta \varepsilon (\omega_p^2 - i\omega\gamma_p')}{\omega_p^2-2i\omega\gamma_p-\omega^2}</tex>

-Last case does not correspond to any of physical model, but allows to obtain more accurate fittings. +Using modified Lorentz term allows to obtain more accurate fittings.
-For example, two (<tex>P=2</tex>) terms of this case are sufficient to fit silicon dielectric function over the wavelength range from 300 to 1000 nm, whereas even a large number of Debye, Drude or Lorentz terms (<tex>a_{p,1}=0</tex>) is inadequate there +For example, two (<tex>P=2</tex>) modified Lorentz terms are sufficient to fit silicon dielectric function over the wavelength range from 300 to 1000 nm, whereas even a large number of Debye, Drude or Lorentz terms (<tex>a_{p,1}=0</tex>) is inadequate there
((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)  ((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-37-1-112|http]] [[http://www.opticsinfobase.org/ol/abstract.cfm?uri=ol-37-1-112|http]]

/home/kintechlab/fdtd.kintechlab.com/docs/data/pages/en/fitting.txt · Last modified: 2012/10/15 18:37 by deinega 