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Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
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Halide Perovskite Thin Film Lasing Mode Control.

Gayoung Lee1, Barry P Rand2,3, Kwangdong Roh1,2

  • 1Department of Physics, Ewha Womans University, Seoul 03760, Republic of Korea.

ACS Applied Materials & Interfaces
|October 2, 2024
PubMed
Summary

Researchers demonstrate precise control over metal halide perovskite laser emission. Cladding structures tune spectral output and generate linear polarization for advanced laser applications.

Keywords:
distributed feedbackgratingshalide perovskiteslaserspolarization

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Area of Science:

  • Materials Science
  • Optoelectronics
  • Semiconductor Physics

Background:

  • Metal halide perovskites are promising amplifying materials for lasers.
  • Controlling laser emission characteristics (spectral and polarization) is crucial for practical applications.
  • Distributed feedback (DFB) lasers offer a platform for precise mode control.

Purpose of the Study:

  • To develop strategies for manipulating single- and multimode lasing in perovskite DFB lasers.
  • To investigate the effect of cladding structures on laser emission properties.
  • To achieve spectral tuning and control of polarization in perovskite lasers.

Main Methods:

  • Fabrication of optically pumped perovskite DFB lasers with varying cladding structures.
  • Optical characterization of lasing emission, including spectral and polarization analysis.
  • Modeling of multilayer slab waveguides to understand optical mode behavior.

Main Results:

  • Cladding structures effectively modify optical properties of guided modes (TE and TM).
  • Spectral tuning of multipeak lasing emission was achieved.
  • Generation of linearly polarized laser modes was demonstrated.
  • Results were validated using methylammonium lead iodide and cesium lead bromide perovskites.

Conclusions:

  • Effective strategies for controlling perovskite laser emission characteristics have been presented.
  • Cladding engineering offers a viable route for tailoring spectral and polarization properties.
  • This work advances the development of tunable and polarized perovskite lasers for various applications.