Abstract
We have theoretically investigated optical absorption spectra inGaAs quantum well (QW) driven by both a strong terahertz (THz)field and a near-infrared field within the theory of densitymatrix. In presence of a strong THz field, the optical transitionsin the QW subbands are altered by the THz field. The alteration has adirect impact on the optical absorption and results in the Autler–Townessplitting and the sidebands generation, which is in agreement with theexperiments.
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