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Updated: Jul 6, 2025

Analysis of Contact Interfaces for Single GaN Nanowire Devices
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High-Performance Multiwavelength GaNAs Single Nanowire Lasers.

Mattias Jansson1, Valentyna V Nosenko1, Yuto Torigoe2

  • 1Department of Physics, Chemistry and Biology, Linköping University, SE-58183 Linköping, Sweden.

ACS Nano
|January 2, 2024
PubMed
Summary

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Optimized growth conditions significantly improved Gallium Arsenide Nitride (GaAsN) nanowire lasers, enabling lower thresholds and higher operating temperatures. These lasers also exhibit self-frequency conversion for cyan-green coherent light emission.

Area of Science:

  • Semiconductor Nanowire Lasers
  • Optoelectronics
  • Nonlinear Optics

Background:

  • Gallium Arsenide Nitride (GaAsN) nanowires are promising for laser applications.
  • Improving laser performance, such as lowering thresholds and increasing operating temperatures, is crucial.
  • Understanding nonlinear optical properties is key for advanced functionalities.

Purpose of the Study:

  • To enhance the performance of GaAsN-based single nanowire lasers.
  • To investigate the underlying mechanisms for performance improvements.
  • To explore self-frequency conversion capabilities for multiwavelength emission.

Main Methods:

  • Optimization of GaAsN nanowire growth conditions.
  • Analysis of material properties to identify factors affecting laser performance.
Keywords:
coherent lightlasingmultiwavelength coherent lightnanophotonicsnanowiresnonlinear opticssecond harmonic generation (SHG)

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  • Characterization of nonlinear optical effects, including second harmonic generation (SHG) and sum-frequency generation (SFG).

    • Main Results:

    • Achieved significant enhancement in GaAsN nanowire laser performance, including lower lasing thresholds and higher operation temperatures.
    • Attributed performance improvements to a reduced density of localized states.
    • Demonstrated self-frequency conversion via SHG and SFG, producing coherent cyan-green light.
    • Identified mode-specific differences in conversion efficiency linked to light extraction efficiency.

    Conclusions:

    • Optimized growth conditions are effective in enhancing GaAsN nanowire laser performance.
    • GaAsN nanowires possess inherent nonlinear optical properties enabling multiwavelength coherent light generation.
    • This research facilitates the development of advanced nanowire lasers for optical communications, sensing, and nanophotonics.