Coherent nonlinear propagation of ultrafast electric field transients through intersubband resonances
Felix T. Eickemeyer, Michael Woerner, Andrew M. Weiner +3 more
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.
Applied Physics Letters•Jul 9, 2001•28 citations