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Proceedings Paper

Nonlinear magneto-optical properties of quantum wires
Author(s): Supriyo Bandyopadhyay; Alexander A. Balandin; A. Svizhenko
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Paper Abstract

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.

Paper Details

Date Published: 26 May 1998
PDF: 10 pages
Proc. SPIE 3404, ALT'97 International Conference on Laser Surface Processing, (26 May 1998); doi: 10.1117/12.308633
Show Author Affiliations
Supriyo Bandyopadhyay, Univ. of Nebraska/Lincoln (United States)
Alexander A. Balandin, Univ. of Nebraska/Lincoln (United States)
A. Svizhenko, Univ. of Nebraska/Lincoln (United States)

Published in SPIE Proceedings Vol. 3404:
ALT'97 International Conference on Laser Surface Processing
Vladimir I. Pustovoy, Editor(s)

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