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

Room-temperature slow light with semiconductor quantum-dot devices.

Hui Su1, Shun Lien Chuang

  • 1Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Illinois 61801, USA.

Optics Letters
|January 31, 2006
PubMed
Summary
This summary is machine-generated.

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

Penfluridol Triggers GSDME-Mediated Immunogenic Pyroptosis to Potentiate Antitumor Immunotherapy.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

<i>Aeromonas salmonicida</i> isolated from pigs: Genomic and phenotypic antimicrobial resistance characterization.

Open veterinary journal·2026
Same author

Notch Signaling Regulates the Neuroprotective Effects of hUCMSCs in a Mouse Model of Cerebral Ischemia.

Journal of molecular neuroscience : MN·2026
Same author

Identification of Hub Genes, Single-Nucleotide Polymorphisms, and Potential Drug Targets In Breast Cancer Using Transcriptomic Analysis.

Journal of visualized experiments : JoVE·2026
Same author

Clinical characteristics and risk factors of protein-losing enteropathy: a retrospective study.

Frontiers in immunology·2026
Same author

Enhancing microbiologically influenced corrosion of Al-Zn-In-Cd sacrificial anode by Pseudomonas sp. in marine tidal environment.

Bioelectrochemistry (Amsterdam, Netherlands)·2026
Same journal

Gaussian-modulated continuous-variable quantum key distribution over 60 km fiber using an integrated silicon photonic receiver.

Optics letters·2026
Same journal

E2E-OCT: end-to-end joint learning model using optical coherence tomography images for vocal cord leukoplakia diagnosis.

Optics letters·2026
Same journal

Holographic generation of panoramic 3D scenes by concave ellipsoidal mirror reflection.

Optics letters·2026
Same journal

Dual-pilot phase recovery with pair-wise maximum-ratio combining for coherent PONs.

Optics letters·2026
Same journal

Mapping the whispering gallery modes of a CaF<sub>2</sub> disk resonator with half-tapered fibers to estimate the fundamental mode volume.

Optics letters·2026
Same journal

Quantitative estimation of deep-subwavelength scale via dark-field scattering axial energy concentration decay profiles.

Optics letters·2026
See all related articles

We achieved controllable room-temperature slow light using quantum-dot semiconductor optical amplifiers. This breakthrough allows for electrical and optical manipulation of light speed, paving the way for advanced optical devices.

Area of Science:

  • Photonics
  • Quantum Optics
  • Semiconductor Devices

Background:

  • Slow light phenomena enable enhanced light-matter interactions.
  • Quantum-dot semiconductor optical amplifiers (QD SOAs) offer unique optical properties.
  • Controlling light propagation is crucial for optical communication and signal processing.

Purpose of the Study:

  • To demonstrate room-temperature slow light in a QD SOA.
  • To investigate electrical and optical controllability of slow light.
  • To analyze the underlying physical mechanisms responsible for slow light generation.

Main Methods:

  • Utilized a quantum-dot semiconductor optical amplifier (QD SOA) in a single-mode waveguide.
  • Employed pump-probe laser experiments to induce and measure slow light.

Related Experiment Videos

  • Applied varying levels of electrical bias (zero and low) and optical pump power.
  • Analyzed the absorption spectrum, group-index dispersion, and group delay.

    • Main Results:

    • Achieved room-temperature slow light at zero and low bias below transparency current.
    • Observed a spectral dip in absorption due to coherent population oscillation.
    • Measured a significant group-index change of 3.0 with a 2 GHz bandwidth at 0.3 mW optical pump power.
    • Demonstrated that the group-index change is controllable via electrical current and optical pump power.

    Conclusions:

    • Room-temperature, electrically and optically controllable slow light is feasible in QD SOAs.
    • Coherent population oscillation is the key mechanism for generating slow light in this system.
    • QD SOAs are promising for developing tunable slow light devices for future optical technologies.