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 Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Clinical outcomes with gelling fibre and silicone-coated foam dressings: a prospective, multicentre study.

Journal of wound care·2026
Same author

Ultra-Wide-Field Noninvasive Imaging Through Scattering Media Via Physics-Guided Deep Learning.

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

Exposure to field-realistic levels of flupyradifurone and thiamethoxam reduces nursing behavior and accelerates foraging onset in Apis mellifera.

Pesticide biochemistry and physiology·2026
Same author

Unravelling the amplified spontaneous emission mechanism in three-dimensional metal halide perovskites.

Nanoscale·2026
Same author

Generalized non-Hermitian Hamiltonian for guided resonances in photonic crystal slabs.

Nanophotonics (Berlin, Germany)·2025
Same author

Shielded Relay Coil design to Optimize WPT and SAR for Distributed Wireless Brain Implants<sup></sup>.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference·2025

Related Experiment Video

Updated: Apr 26, 2026

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode
10:41

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode

Published on: May 31, 2018

8.1K

Surface-emitting red, green, and blue colloidal quantum dot distributed feedback lasers.

Kwangdong Roh, Cuong Dang, Joonhee Lee

    Optics Express
    |August 5, 2014
    PubMed
    Summary

    Colloidal quantum dot (CQD) films were used to create red, green, and blue surface-emitting distributed feedback (DFB) lasers. These CQD DFB lasers exhibit low thresholds and stable single-mode operation, paving the way for advanced optoelectronic devices.

    More Related Videos

    Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
    12:57

    Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

    Published on: October 13, 2017

    8.3K
    Gradient Echo Quantum Memory in Warm Atomic Vapor
    10:00

    Gradient Echo Quantum Memory in Warm Atomic Vapor

    Published on: November 11, 2013

    13.1K

    Related Experiment Videos

    Last Updated: Apr 26, 2026

    Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode
    10:41

    Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode

    Published on: May 31, 2018

    8.1K
    Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
    12:57

    Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

    Published on: October 13, 2017

    8.3K
    Gradient Echo Quantum Memory in Warm Atomic Vapor
    10:00

    Gradient Echo Quantum Memory in Warm Atomic Vapor

    Published on: November 11, 2013

    13.1K

    Area of Science:

    • Optoelectronics
    • Materials Science
    • Photonics

    Background:

    • Colloidal quantum dots (CQDs) offer tunable optical properties for light-emitting applications.
    • Distributed feedback (DFB) lasers require precise material structuring for efficient light emission.
    • Achieving efficient and stable lasing in the visible spectrum from CQDs remains a challenge.

    Purpose of the Study:

    • To demonstrate surface-emitting distributed feedback (DFB) lasers using colloidal quantum dot (CQD) films across red, green, and blue wavelengths.
    • To investigate the lasing performance, including threshold, mode stability, and beam coherence, of CQD-based DFB lasers.
    • To leverage the single exciton optical gain regime in engineered CQDs to suppress non-radiative recombination processes.

    Main Methods:

    • Fabrication of densely packed CQD films deposited on periodic grating patterns.
    • Optical pumping of CQD films to achieve 2nd-order DFB lasing action.
    • Characterization of lasing properties, including threshold energy density, spectral width, and far-field beam patterns.

    Main Results:

    • Demonstrated surface-emitting DFB lasers in red, green, and blue using CQD films.
    • Achieved low optical pumping energy densities of 120, 280, and 330 μJ/cm² for red, green, and blue DFB lasers, respectively.
    • Observed single-mode operation with a full-width-half-maximum (FWHM) below 1 nm and high spatial beam coherence.

    Conclusions:

    • CQD films on periodic gratings enable efficient 2nd-order DFB lasing across the visible spectrum.
    • Engineered CQDs operating in the single exciton regime significantly reduce lasing thresholds by suppressing Auger recombination.
    • The developed CQD DFB lasers exhibit stable, single-mode operation and high beam quality, suitable for advanced optoelectronic applications.