Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

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

Development and validation of a prognostic nomogram incorporating preoperative NLR, CEA and CA19-9 for overall survival in colorectal cancer.

Oncology letters·2026

Same author

Polarized Single-Photon Emission from an Anisotropic Dirac Cavity.

Physical review letters·2026

Same author

Advances in Active Materials of Enzymatic Electrochemical Sensors for Detecting Organophosphorus Pesticides.

Molecules (Basel, Switzerland)·2026

Same author

Polarization-dependent gain characterization in x-cut LNOI erbium-doped waveguide amplifiers.

Nanophotonics (Berlin, Germany)·2025

Same author

C-band 33-GHz high flatness photon-photon resonance directly modulated semiconductor lasers.

Optics express·2025

Same author

Low-loss, large-bandwidth multi-tip edge coupler for heterogeneous chip integration with large-mode-field-diameter.

Optics express·2025

Search research articles

Related Experiment Video

Updated: Jan 1, 2026

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

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

Published on: November 22, 2019

A high-performance topological bulk laser based on band-inversion-induced reflection.

Zeng-Kai Shao^1,2,3, Hua-Zhou Chen^1,2,3, Suo Wang^1,2,3

¹State Key Lab for Mesoscopic Physics and School of Physics, Peking University, Beijing, China.

Nature Nanotechnology

|December 18, 2019

Summary

Researchers developed a novel topological bulk laser using semiconductor nanodisks. This device leverages topological band inversion for efficient, single-mode lasing with directional emission, paving the way for practical applications.

More Related Videos

Laser-induced Forward Transfer for Flip-chip Packaging of Single Dies

Laser-induced Forward Transfer for Flip-chip Packaging of Single Dies

Published on: March 20, 2015

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

Related Experiment Videos

Last Updated: Jan 1, 2026

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

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

Published on: November 22, 2019

Laser-induced Forward Transfer for Flip-chip Packaging of Single Dies

Laser-induced Forward Transfer for Flip-chip Packaging of Single Dies

Published on: March 20, 2015

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

Area of Science:

Condensed Matter Physics
Photonics
Materials Science

Background:

Topological insulators exhibit unique bulk and edge/surface electronic properties due to band dispersion.
Practical applications of topological band properties in bulk materials remain largely theoretical.
Photonic crystals offer a platform to engineer electromagnetic wave behavior.

Purpose of the Study:

To propose and experimentally demonstrate a functional laser based on topological bulk properties.
To investigate the application of topological band inversion in photonic devices.
To achieve practical lasing characteristics using topological effects.

Main Methods:

Fabrication of semiconductor nanodisk arrays to create photonic crystal cavities.
Engineering topological band inversion between the cavity's interior and cladding.
Utilizing topological edge reflection for optical feedback mechanism.
Characterization of lasing performance including mode, emission, and efficiency.

Main Results:

Demonstration of a topological bulk laser operating at room temperature.
Achieved single-mode lasing with highly directional vertical emission.
The device meets practical requirements for cavity size, threshold, linewidth, and side-mode suppression ratio.
Topological band-inversion-induced reflection confirmed as the lasing feedback mechanism.

Conclusions:

The developed topological bulk laser represents a significant advancement in practical applications of topological physics.
The device's performance metrics align with industry standards for various applications.
Potential applications include near-field spectroscopy, solid-state lighting, and optical communication systems.