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Observation of Narrow-Band Terahertz Gain in Two-Dimensional Magnetoexcitons

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Abstract

We have performed time- and polarization-resolved optical-pump—terahertz-probe magnetospectroscopy measurements on a GaAs quantum well and observed narrow-band, polarization-selective THz gain, whose center frequency shifts with applied magnetic field.

© 2019 The Author(s)

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