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Tailoring the Random Lasing Properties by Controlled Phase Separation Process in PMMA:PVK Dye-Doped Polymeric Blends
Konrad Cyprych1, Lech Sznitko1
1Advanced Materials Engineering and Modeling Group, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland.
Polymers
|September 28, 2021
Summary
Researchers developed a new method for fabricating efficient random lasers (RL) using polymer blends. By controlling polymer concentrations, they can tune the lasing properties and switch between different lasing regimes for tailored optical applications.
Area of Science:
- Materials Science
- Optics
- Polymer Science
Background:
- Random lasing (RL) is a unique optical phenomenon observed in disordered media.
- Polymer blends offer potential for developing novel laser materials due to their tunable properties.
Purpose of the Study:
- To investigate random lasing in dye-doped PMMA/PVK polymer blends.
- To explore the influence of polymer concentration on lasing parameters and material morphology.
- To demonstrate a simple fabrication method for efficient random lasers.
Main Methods:
- Fabrication of dye-doped PMMA/PVK polymer blends with varying compositions.
- Characterization of blend morphologies using microscopy.
- Analysis of lasing properties, including emission spectra and threshold conditions.
Main Results:
- Phase separation in polymer blends supports random lasing in both waveguiding and quasi-waveguiding regimes.
- Polymer concentration dictates the regime and influences threshold conditions, spectral shifts, and mode behavior.
- Material morphology is directly linked to observed random lasing properties.
Conclusions:
- Disordered polymer blends are effective for random laser fabrication.
- Phase separation offers a controllable route to tune random lasing characteristics.
- This technique provides a fast, cost-effective method for creating tailored random laser materials.
