Spin gratings lasting longer than the carrier lifetime are measured in lightly n-doped quantum wells. In a magnetic field, precession of the grating is observed, and diffusion rates are determined by varying the grating period.
© 2006 Optical Society of America
(300.0300) Spectroscopy : Spectroscopy
(300.2570) Spectroscopy : Four-wave mixing
(320.0320) Ultrafast optics : Ultrafast optics
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors
S. G. Carter, Z. Chen, S. T. Cundiff, A. S. Huntington, and L. A. Coldren, "Transient Spin-gratings of Itinerant Electrons in Lightly-doped GaAs Quantum Wells," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, Technical Digest (CD) (Optical Society of America, 2006), paper QME6.
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