Phase-sensitive observation of THz-dressed exciton
2016
We measured the transient absorption changes of a near-infrared (NIR) pulse in GaAs quantum well under a multicycle THz wave driving. By changing the delay between the NIR probe and the THz wave, the absorption strength can be modulated on a sub-cycle timescale of THz wave, indicating the formation of THz-induced dressed states of excitons.
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