https://doi.org/10.1140/epjd/e2009-00290-6
Controllable amplification and absorption properties in coupled-double-quantum-wells with tunneling-induced interference
Wuhan National Laboratory for Optoelectronics and
School of Physics, Huazhong University of Science and Technology,
Wuhan 430074, P.R. China
Corresponding author: xyhao.321@163.com
Received:
26
June
2009
Revised:
15
September
2009
Published online:
17
November
2009
We investigate optical amplification and absorption properties under a closed-loop double-Λ configuration in an asymmetric semiconductor coupled-double-quantum-well (CDQW) nanostructure based on interband transitions (IBTs). In the proposed CDQW scheme, the amplification, absorption or zero-absorption (transparency) of the probe field and the signal field can be realized with realistic experimental parameters by appropriately adjusting the relative phase, the two pump Rabi energies, the probe detuning, and the Fano-interference strength, respectively. Such a semiconductor system is much more practical than its atomic counterpart because of its flexible design and the wide adjustable parameters.
PACS: 42.50.Gy – Effects of atomic coherence on propagation, absorption, and amplification of light; electromagnetically induced transparency and absorption / 78.67.De – Quantum wells / 42.50.Hz – Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2009
