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Random laser with superscatterers at designable wavelengths.

Pidong Wang, Xinzheng Zhang, Yinxiao Xiang

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    |September 26, 2015
    PubMed
    Summary

    Super-scatterers significantly boost light scattering for enhanced random lasing. These novel designs reduce lasing thresholds by 100x at primary color wavelengths.

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    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • Superscattering enhances total scattering cross-section.
    • Random systems are crucial for applications like random lasers.

    Purpose of the Study:

    • Design novel super-scatterers for primary colors.
    • Analyze the impact of these super-scatterers on random lasing properties.

    Main Methods:

    • Designed three types of super-scatterers.
    • Integrated super-scatterers into random systems.
    • Analyzed random lasing thresholds at different wavelengths.

    Main Results:

    • Achieved maximum total scattering cross-sections at three primary colors.
    • Observed a significant reduction in lasing thresholds (by two orders of magnitude).
    • Demonstrated reduced thresholds specifically at trichromatic wavelengths compared to other wavelengths or conventional scatterers.

    Conclusions:

    • Super-scatterers effectively enhance random lasing.
    • Trichromatic super-scatterers offer a pathway to low-threshold random lasers at specific wavelengths.