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2D tunable all-solid-state random laser in the visible.

Bhupesh Kumar1, Ran Homri1, Patrick Sebbah2

  • 1Department of Physics, The Jack and Pearl Resnick Institute for Advanced Technology, Bar-Ilan University, 5290002, Ramat Gan, Israel.

Scientific Reports
|May 23, 2023
PubMed
Summary
This summary is machine-generated.

Researchers demonstrate a novel 2D solid-state random laser using disordered air-holes in a polymer film. This compact, tunable laser source offers a new platform for exploring advanced photonics.

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Area of Science:

  • Photonics
  • Materials Science
  • Solid-State Physics

Background:

  • Random lasers offer unique optical feedback mechanisms.
  • Developing compact, tunable solid-state lasers is a key technological goal.
  • Controlled disorder in materials can lead to novel photonic properties.

Purpose of the Study:

  • To demonstrate a two-dimensional (2D) solid-state random laser emitting in the visible spectrum.
  • To investigate the role of controlled disorder (air-holes) in providing optical feedback.
  • To explore tunability and spatial coherence of the random laser emission.

Main Methods:

  • Fabrication of a dye-doped polymer film with a controlled disordered arrangement of air-holes.
  • Utilizing optical pumping to achieve laser emission.
  • Systematic variation of scatterer density and pump area to study laser characteristics.

Main Results:

  • Demonstrated a 2D solid-state random laser with visible emission.
  • Identified an optimal scatterer density for minimum threshold and maximum scattering.
  • Achieved red-shifting of laser emission by decreasing scatterer density or increasing pump area.
  • Showcased easy control over spatial coherence by varying pump area.

Conclusions:

  • The developed 2D random laser is a compact, on-chip tunable laser source.
  • This system provides a unique platform for exploring non-Hermitian photonics.
  • Controlled disorder is an effective strategy for designing advanced laser devices.