Subharmonic generation in a driven asymmetric quantum well

Bjorn Birnir; Adriano A. Batista; Mark S. Sherwin

doi:10.1117/12.347120

29 April 1999 Subharmonic generation in a driven asymmetric quantum well

Bjorn Birnir, Adriano A. Batista, Mark S. Sherwin

Proceedings Volume 3617, Terahertz Spectroscopy and Applications; (1999) https://doi.org/10.1117/12.347120
Event: Optoelectronics '99 - Integrated Optoelectronic Devices, 1999, San Jose, CA, United States

Abstract

Subharmonic generation in quantum wells may have important technological applications. Potentially it can be used to produce 'squeezed' states of THz radiation. Galdrikian and Birnir, Phys. Rec. Lett 29, 3308, derived density matrix dynamical equations for a many -body two-level system of electrons confined in an asymmetric square well. They showed numerically that the electron current density would undergo period-doubling bifurcations and thus produce subharmonics of the laser frequency (omega) . Their equations are averaged to second order at twice the frequency of the bare two-level system, (omega) ₀. It is found that at (omega) equals 2(omega) ₀ the period doubling bifurcation is similar to the one of the Duffing's equation.

Citation Download Citation

Bjorn Birnir, Adriano A. Batista, and Mark S. Sherwin "Subharmonic generation in a driven asymmetric quantum well", Proc. SPIE 3617, Terahertz Spectroscopy and Applications, (29 April 1999); https://doi.org/10.1117/12.347120

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