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nnp:optics:optical_absorption_simple
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| Both sides previous revision Previous revision Next revision | Previous revision Last revision Both sides next revision | ||
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nnp:optics:optical_absorption_simple [2019/03/11 13:34] stefan.birner [Optics] |
nnp:optics:optical_absorption_simple [2019/03/11 13:36] stefan.birner [Quantum Mechanics] |
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| ===== The output ===== | ===== The output ===== | ||
| ==== Bandedges in the sample ==== | ==== Bandedges in the sample ==== | ||
| - | After it has calculated the strain, it calculates the the bandedges of the structure which can be seen on the figure: | + | After the strain has been calculated, the bandedges of the structure are determined which can be seen in the figure: |
| {{ :nnp:optics:optics_simple_bandedges.png?600 |}} | {{ :nnp:optics:optics_simple_bandedges.png?600 |}} | ||
| <caption> | <caption> | ||
| - | The bandedges in the sample Conduction band HH, and LH bands SO band | + | The bandedges in the sample: Conduction band, heavy hole, light hole and split-off hole band edges |
| </caption> | </caption> | ||
| - | In the quantum well region it can be seen that the bandedge smaller, and the valence band edge is close to the fermi level. That is the reason, why the valence band is populated, and interband transition could happen. | + | In the quantum well region it can be seen that the bandedge is smaller, and the valence band edge is close to the Fermi level. |
| + | That is the reason why the valence band is populated and interband transition could happen. | ||
| ==== Quantum Mechanics ==== | ==== Quantum Mechanics ==== | ||
| - | From the bandedges the program calculates the wavefunctions, in each band which is definied in the line: | + | From the bandedges the program calculates the wavefunctions in each band which is defined in the line: |
| <code> | <code> | ||
| num_electrons=$NumE | num_electrons=$NumE | ||
| num_holes=$NumH | num_holes=$NumH | ||
| </code> | </code> | ||
| - | It means how many electron and hole states should be calculated. | + | Here you can specify how many electron and hole states should be calculated. |
| The wavefunctons are plotted on the following figure: | The wavefunctons are plotted on the following figure: | ||
| {{ :nnp:optics:optics_simple_wf_simple.png?600 |}} | {{ :nnp:optics:optics_simple_wf_simple.png?600 |}} | ||
nnp/optics/optical_absorption_simple.txt · Last modified: 2021/07/22 17:38 by stefan.birner
