In the EBG structure design discussed above, a simplified model that assumes no free carrier
lateral diffusion was used.
The free carrier
density and the trap density are calculated to be about 1.78 x 1[0.sub.23] to 2.04 x [10.sup.23] [m.sup.-23] and 6.93 x [10.sup.23] to 15.9 x [10.sup.23] [m.sup.-3], respectively, for different thicknesses.
At low applied voltages (V, [V.sub.tr]), J-V characteristics followed the ohm's law, which implies that the density of thermally generated free carriers
([n.sub.0]) inside the films is larger than the injected carriers .
The FTO coated glass reaches a higher temperature than the uncoated glass of the same thickness across all NIR intensities due to the enhanced absorption of the FTO layer in the NIR region (due to a larger concentration of free carriers
Finally, in the wavelength interval 1240-2500 nm, the main origin of the absorption is the free carrier
where [[omega].sup.n.sub.pn] = [e.sup.2][N.sub.n] / [m.sup.*.sub.n][[epsilon].sub.O][[epsilon].sup.p-Ge.sub.k] is the plasma angular frequency, [[omega].sub.cn] = e[B.sub.0] / [m.sup.*.sub.n] is the cyclotron resonance angular frequency, [v.sub.n] = e / [[mu].sub.n][m.sup.*.sub.n] is the free carriers
average collision frequency, [omega] is the angular operating frequency .
Although the TPA in silicon in the wavelength range around 1.55 [micro]m is relatively small as compared to III-V compounds, the TPA induced free carrier
can introduce significant optical absorption, which is proportional to the free carrier
In the meantime, the control system directs empty Power & Free carrier
sets through a section paralleling the sorting buffer and the dip tanks.
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