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The energy spectrum and bound-bound intraband transitions in semiconductor quantum dots are analyzed. Numerical results for the GaAs-Alₓ{Ga}_{1{{-}}x}$As system indicate that a considerable absorption at a number of distinct wavelengths in the infrared range ({~}7--25 {μ}m) may be obtained, which greatly exceeds free-carrier absorption.
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Milanović et al. (1989) studied this question.
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