Coherent nonlinear propagation of ultrafast electric field transients through intersubband resonances
- 2 July 2001
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 79 (2) , 165-167
- https://doi.org/10.1063/1.1384898
Abstract
Amplitude and phase-controlled midinfrared field transients at a wavelength of 12.5 μm induce resonant intersubband excitations in n-type modulation-doped GaAs/AlGaAs quantum wells. The transmitted electric field transients are directly measured by ultrafast electro-optic sampling. Coherent control of intersubband excitations is demonstrated by applying two phase-locked pulses with variable relative phase. A coherent nonlinear response corresponding to partial Rabi flops of up to 60° in the Bloch sphere is observed with excitation pulses of only 1 pJ energy.Keywords
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