Influence of Laser radiation on the absorption of a weak electronmagnetic wave by confined electrons in compositional superlatices (case of electron - Acoustic phonons interaction)

Tóm tắt Influence of Laser radiation on the absorption of a weak electronmagnetic wave by confined electrons in compositional superlatices (case of electron - Acoustic phonons interaction): ...                          '2 2, ,( ) 1 ( )n k q qn k qn t N n t N            ' 1 2 2,, i exp n k qn k q s m i t t                              ' 2 2,, ( ) ( ) 1q n k qn k qn t N n t N  ...           ' , B B exp exp k k s mn n T T                    (7)   5 2 2 4 2 s,m , s,m2 , 1 52 4 B B2 4 a os2 exp 2 2 4 2k 2k2 s m s m mB a G c K T T                                   ...case of near threshold to get analytical expressions for the absorption coefficient for the mechanism of electron- acoustic phonons interaction. The results showed that the absorption coefficient depends on the complexity of the system temperature, amplitude and frequency of the weak and ele...