Intersubband optical absorption in quantum well structures in tilted magnetic field

Intersubband optical absorption spectrum was studied in quantum well structures in quantizing magnetic field tilted with respect to the structure layers. Analytical expressions were obtained for coefficient of absorption via optical transitions between Landau levels of different subbands. A lifting of selection rule for optical transitions was demonstrated in quantum well structures with asymmetrical potential profile. A character of absorption spectrum tuning by varying the magnitude and orientation of magnetic field was cleared.