Intraband optical transitions in neumann quantum well

In this paper, we study intraband optical transitions in a Neumann quantum well. Using the energy spectrum and wave function of an electron in such a well, we obtain an analytical expression for the absorption coefficient for intraband optical transitions. Graphs of the absorption coefficient versus photon energy are presented for different quantum well widths and for several types of intraband transitions. Analysis of the graphs demonstrates that an increase in the well width leads to an increase in the maximum absorption coefficient and its shift to higher energies (blue shift) relative to the incident photon energy. The probability of optical transitions to higher energy levels increases. This is due to stronger absorption at these levels compared to lower-energy states. The results obtained are in good agreement with the data presented in other papers on this topic.