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Lotus-Leaf-Inspired Flexible and Tunable Random Laser.

Xueyang Li1,2, Hao Liu1,2, Xiaoyan Xu3

  • 1Key Laboratory of Chemical Lasers , Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023 , P. R. China.

ACS Applied Materials & Interfaces
|January 21, 2020
PubMed
Summary
This summary is machine-generated.

Researchers developed a flexible, tunable random laser using a lotus leaf-inspired surface. This novel laser technology offers adjustable wavelengths and potential for diverse applications like biosensors and wearable devices.

Keywords:
flexiblelotus leafmultiple scatteringnanocastingrandom lasertunable

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Area of Science:

  • Materials Science
  • Photonics
  • Optics

Background:

  • Random lasers offer unique properties but often lack tunability and flexibility.
  • Developing adaptable laser systems is crucial for advanced optical applications.

Purpose of the Study:

  • To create a flexible and tunable random laser.
  • To leverage biomimetic surface structures for enhanced laser performance.

Main Methods:

  • Fabrication of a poly(dimethylsiloxane) substrate with lotus leaf-inspired micropapillae using soft lithography.
  • Utilizing the micropapillae for efficient photon scattering and closed-loop path formation.
  • Tuning the laser spectrum by adjusting pump position and substrate flexing.

Main Results:

  • Achieved a tunable random laser with a spectrum adjustable up to 26.0 nm by changing pump position.
  • Demonstrated an additional 14 nm tuning range by mechanically flexing the substrate.
  • Ensured photostability by hermetically sealing the gain medium.

Conclusions:

  • The developed flexible random laser offers significant tunability and adaptability.
  • The biomimetic micropapilla structure enhances photon scattering for random lasing.
  • This technology shows promise for flexible wearable devices, optical biosensors, and multicolor lasers.