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Questions related from Mohamed Ismail Abdelrahman
To expand Green's function (G), we have two solutions depending on whether r>r' or r'>r to avoid divergence. On the contrary, it has been argued [1] that the imaginary part of Green's function (Im...
15 April 2021 9,772 3 View
For a 1D cavity, the reflection at the interfaces flips the handedness of CP from right to left and vice versa. So there is no way a 1D can hold a CP mode. But imagine if we have a 3D cavity where...
14 May 2020 7,114 6 View
There are many physical nonreciprocal systems and of course they satisfy thermal equilibrium, so how they can get into equilibrium while being nonreciprocal (no detailed balance)?
01 March 2019 8,968 0 View
All the theories of solar cell absorption (that I have seen) are based on the assumption of weakly absorbing material. I understand that we need such an assumption in order to obtain the density...
26 February 2019 7,913 4 View
Similar to the modes of Fabry-Perot cavity, which their separation depends on the cavity length and refractive index, is it possible to define and calculate modes when the cavity materials has a...
01 January 1970 9,925 2 View