Title :
Polarization dynamics of the nonlinear coherent emission from uniaxially-strained quantum wells
Author :
Smirl, Arthur L. ; Chen, X. ; Buccafusca, O.
Author_Institution :
lab. for Photonics & Quantum Electron., Iowa Univ., Iowa City, IA, USA
Abstract :
We describe the first measurements of the dynamics of the amplitude, phase and polarization state of the coherent nonlinear emission from an anisotropic uniaxially-strained GaAs-AlGaAs MQW. We use time-resolved polarimetry to identify and to study two different links between the macroscopic changes in the vectorial nature of the emitted nonlinear signal and the microscopic materials processes. One source of the polarization changes is the anisotropy in the band structure introduced by the noncubic uniaxial strain
Keywords :
high-speed optical techniques; light coherence; light polarisation; multiwave mixing; polarimetry; semiconductor quantum wells; 150 fs; GaAs-AlGaAs; amplitude state; anisotropic uniaxially-strained GaAs-AlGaAs MQW; band structure anisotropy; coherent nonlinear emission; emitted nonlinear signal; macroscopic changes; microscopic materials processes; noncubic uniaxial strain; nonlinear coherent emission; phase state; polarization changes; polarization dynamics; polarization state; time-resolved polarimetry; uniaxially-strained quantum wells; vectorial nature; Anisotropic magnetoresistance; Geometrical optics; Nonlinear optics; Optical mixing; Optical polarization; Optical refraction; Pulse measurements; Quantum well devices; Substrates; Uniaxial strain;
Conference_Titel :
Nonlinear Optics '98: Materials, Fundamentals and Applications Topical Meeting
Conference_Location :
Kauai, HI
Print_ISBN :
0-7803-4950-4
DOI :
10.1109/NLO.1998.710354
