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Related Experiment Video

Updated: Jun 4, 2026

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

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Single-nanowire single-mode laser.

Yao Xiao1, Chao Meng, Pan Wang

  • 1State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University , Hangzhou 310027, China.

Nano Letters
|February 17, 2011
PubMed
Summary
This summary is machine-generated.

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Researchers achieved single-mode laser emission using folded cadmium selenide (CdSe) nanowires. This novel loop mirror design enables tunable, low-threshold lasing, paving the way for advanced optical devices.

Area of Science:

  • Optoelectronics
  • Nanotechnology
  • Laser Physics

Background:

  • Single nanowires offer potential for miniaturized optical devices.
  • Achieving stable, single-mode laser emission from nanowires remains a challenge.

Purpose of the Study:

  • To demonstrate single-mode laser emission from a single nanowire.
  • To explore the use of folded nanowire structures for laser applications.
  • To investigate tunable laser emission from nanowire cavities.

Main Methods:

  • Fabrication of single-mode laser emission in single nanowires.
  • Utilizing a 200 nm diameter Cadmium Selenide (CdSe) nanowire.
  • Folding the nanowire to create loop mirrors and coupled cavities.
  • Analyzing laser emission characteristics, including wavelength, linewidth, and threshold.

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Last Updated: Jun 4, 2026

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

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
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Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation

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A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
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Main Results:

  • Single-mode laser emission achieved at approximately 738 nm wavelength.
  • Narrow linewidth of 0.12 nm obtained.
  • Low threshold for laser emission demonstrated.
  • Vernier effect in coupled cavities confirmed as the mode selection mechanism.

Conclusions:

  • Folded CdSe nanowires with loop mirrors enable efficient single-mode laser emission.
  • The vernier effect provides effective mode selection.
  • The tunable nature of the loop structure presents opportunities for developing tunable nanowire lasers.