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

Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...

You might also read

Related Articles

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

Sort by
Same author

Analytical solution of the radiative transfer equation of light radiance in a turbid slab with an inner-medium source under the P3-1D approximation.

Optics express·2026
Same author

Highly linear directly modulated DFB laser towards pre-distortion-free FMCW LiDAR.

Optics express·2026
Same author

Excitonic modeling of ground-state quenching dynamics in epitaxial quantum dot lasers on silicon.

Optics express·2025
Same author

Optical chaotic signal recovery in turbulent environments using a programmable optical processor.

Light, science & applications·2025
Same author

Erratum to: Physics and applications of quantum dot lasers for silicon photonics.

Nanophotonics (Berlin, Germany)·2024
Same author

Intensity noise reduction in quantum dot comb laser by lower external carrier fluctuations.

Optics letters·2024
Same journal

Denoising algorithm of Φ-OTDR systems based on adaptive fractional wavelet transform denoising.

Optics express·2026
Same journal

Millisecond photon-to-photon latency and high-speed volumetric projection system for optogenetics.

Optics express·2026
Same journal

Polarization-encoded coaxial structured light for high-precision 3D surface profilometry.

Optics express·2026
Same journal

Discrete freeform optical design based on collaborative optimization of point cloud and local normals.

Optics express·2026
Same journal

Ultrafast ghost imaging with 25 GHz speckle switching and wavelength-division multiplexing.

Optics express·2026
Same journal

Atomic vapor cells fabricated by femtosecond laser welding of standard-optical-quality glass.

Optics express·2026
See all related articles

Related Experiment Video

Updated: Jun 5, 2026

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

Two-color multi-section quantum dot distributed feedback laser.

Nader A Naderi1, Frédéric Grillot, Kai Yang

  • 1Center for High Technology Materials, University of New Mexico, Albuquerque, New Mexico 87106, USA. nader@unm.edu

Optics Express
|January 4, 2011
PubMed
Summary
This summary is machine-generated.

Researchers created a dual-wavelength quantum-dot laser by asymmetrically pumping the device. This compact terahertz (THz) source achieves equal power between ground and excited states for two-color emission.

More Related Videos

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
08:48

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Published on: November 22, 2019

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

Related Experiment Videos

Last Updated: Jun 5, 2026

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

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
08:48

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Published on: November 22, 2019

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

Area of Science:

  • Optoelectronics
  • Quantum Dot Lasers
  • Terahertz (THz) Sources

Background:

  • Quantum dot (QD) lasers offer unique carrier dynamics.
  • Achieving stable dual-wavelength emission is crucial for advanced photonic applications.
  • Distributed feedback (DFB) lasers provide wavelength selectivity.

Purpose of the Study:

  • To realize a dual-wavelength emission source using a two-section quantum-dot distributed feedback laser.
  • To investigate the effect of asymmetric pumping on mode power equalization.
  • To explore the potential of this device as a compact terahertz (THz) source.

Main Methods:

  • Asymmetric pumping of a two-section quantum-dot distributed feedback laser.
  • Analysis of carrier dynamics in quantum-dot gain media.
  • Characterization of dual-wavelength emission properties and frequency difference.

Main Results:

  • Equalization of power between ground-state and excited-state modes under asymmetric bias.
  • Realization of two-color emission with an 8-THz frequency difference.
  • Demonstration of quantum-dot state manipulation via external optical stabilization.

Conclusions:

  • Asymmetric pumping enables power equalization in QD lasers due to unique carrier dynamics.
  • The developed device shows promise as a compact and efficient THz source.
  • Optical stabilization techniques can control QD states, enhancing device versatility.