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26 May 1998 Nonlinear magneto-optical properties of quantum wires
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Proceedings Volume 3404, ALT'97 International Conference on Laser Surface Processing; (1998)
Event: ALT '97 International Conference on Laser Surface Processing, 1997, Limoges, France
This paper presents a review of our theoretical work on non- linear magneto-optical properties of semiconductor quantum wires. We have studied both second- and third-order non- linearities. The former arises from dipole transitions within the quantized magneto-electronic subbands in a quantum wire, and the latter arises from phase-space filling and saturation of the excitonic state followed by the formation of biexcitons. A magnetic field causes non-zero second-order non-linearity in a geometrically symmetric quantum wire by breaking inversion symmetry and inducing forbidden transitions between electronic subbands. It also enhances third-order non-linearity by adding magnetostatic confinement to the spatial and dielectric confinement of excitons and biexcitons, thereby further constricting the phase space for these entities. Additionally, we find that a magnetic field can be used to modulate the non-linear differential refractive index and absorption coefficient of quantum wires thus allowing efficient polariton transport, optical waveguiding without a concomitant high absorption or insertion loss, and the possibility to realize magneto- optical devices such as frequency modulators, tunable couplers, limiters and mixers.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Supriyo Bandyopadhyay, Alexander A. Balandin, and A. Svizhenko "Nonlinear magneto-optical properties of quantum wires", Proc. SPIE 3404, ALT'97 International Conference on Laser Surface Processing, (26 May 1998);

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