Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Spin-sensitive bleaching and monopolar spin orientation in quantum wells.

S D Ganichev1, S N Danilov, V V Bel'kov

  • 1Institut für Experimentelle und Angewandte Physik, Universität Regensburg, D-93040 Regensburg, Germany.

Physical Review Letters
|February 28, 2002
PubMed
Summary

Spin-sensitive absorption bleaching was observed in p-type quantum wells. Circularly polarized light saturates absorption faster than linear light, revealing hole spin relaxation times.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Road to Genicular Artery Embolization: Importance of the Anastomotic Network.

Cardiovascular and interventional radiology·2025
Same author

Management of incontinence after classic bladder exstrophy closure.

Actas urologicas espanolas·2025
Same author

Multicentric Angiographic Assessment of the Branching Patterns and Anastomotic Network of the Genicular Arteries, with Implications for Genicular Artery Embolization.

Cardiovascular and interventional radiology·2025
Same author

Genicular Artery Embolization in Moderate to Severe Knee Osteoarthritis: Technique, Safety and Clinical Outcome.

Cardiovascular and interventional radiology·2025
Same author

Terahertz Radiation Driven Nonlinear Transport Phenomena in Two-Dimensional Tellurene.

Nano letters·2024
Same author

Strong connectivity to the sensorimotor cortex predicts clinical effectiveness of thalamic deep brain stimulation in essential tremor.

NeuroImage. Clinical·2024

Area of Science:

  • Solid-state physics
  • Quantum optics
  • Semiconductor heterostructures

Background:

  • Quantum wells are crucial in semiconductor devices.
  • Understanding spin dynamics in p-type materials is key for spintronics.
  • Far-infrared spectroscopy probes electronic properties.

Purpose of the Study:

  • Investigate spin-dependent optical absorption in p-type GaAs/AlGaAs quantum wells.
  • Determine the influence of light polarization on absorption saturation.
  • Measure spin relaxation times of holes.

Main Methods:

  • Fabrication of p-type GaAs/AlGaAs quantum well structures.
  • Far-infrared radiation absorption measurements.
  • Variable polarization and intensity optical spectroscopy.

Related Experiment Videos

Main Results:

  • Observed spin-sensitive bleaching of far-infrared absorption.
  • Circularly polarized light saturated absorption at lower intensities than linear light.
  • Monopolar spin orientation in the heavy-hole subband was identified as the cause.
  • Derived hole spin relaxation times in the tens of picoseconds range.

Conclusions:

  • Spin orientation significantly impacts far-infrared absorption in p-type quantum wells.
  • The study provides a method for measuring hole spin relaxation times.
  • Results contribute to the understanding of spin dynamics in semiconductor nanostructures.