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Updated: May 27, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Bottom-up photonic crystal lasers.

Adam C Scofield1, Se-Heon Kim, Joshua N Shapiro

  • 1Department of Electrical Engineering and California NanoSystems Institute, University of California at Los Angeles, Los Angeles, California 90095, United States. ascofield@ucla.edu

Nano Letters
|November 22, 2011
PubMed
Summary
This summary is machine-generated.

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Researchers developed bottom-up photonic crystal lasers using III-V nanopillars. This method integrates gain and band gap formation, enabling tunable, single-mode room-temperature operation with low thresholds.

Area of Science:

  • Materials Science
  • Optoelectronics
  • Nanotechnology

Background:

  • Photonic crystal lasers offer unique light manipulation capabilities.
  • Bottom-up fabrication methods are crucial for advanced photonic devices.
  • III-V semiconductor nanopillars are promising for laser applications.

Purpose of the Study:

  • To demonstrate bottom-up fabrication of photonic crystal lasers using directed III-V nanopillar growth.
  • To achieve simultaneous formation of photonic band gap and active gain regions.
  • To enable tunable, single-mode room-temperature operation.

Main Methods:

  • Catalyst-free selective-area metal-organic chemical vapor deposition (MOCVD) on masked GaAs substrates.
  • Fabrication of GaAs/InGaAs/GaAs axial double heterostructure nanopillars with lateral InGaP shells.

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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
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Related Experiment Videos

Last Updated: May 27, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
13:02

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

Published on: February 25, 2017

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

  • Lithographic control of pillar pitch and diameter for wavelength tuning.

    • Main Results:

    • Successful demonstration of single-mode room-temperature operation of photonic crystal lasers.
    • Low threshold peak power density achieved (∼625 W/cm²).
    • Tunable lasing wavelengths from 960 to 989 nm controlled by pillar dimensions.

    Conclusions:

    • Bottom-up III-V nanopillar growth provides a versatile platform for photonic systems integration.
    • The developed method allows precise control over gain placement and cavity resonance.
    • This approach paves the way for novel photonic devices and integrated circuits.