학술논문
Magnetically tunable random lasing from polymer dispersed liquid crystal doped ferromagnetic nanoparticles in capillary.
Document Type
Article
Author
Source
Subject
*POLYMER liquid crystals
*ACTIVE medium
*FIELD emission
*MAGNETIC nanoparticles
*MOLECULAR spectra
*MAGNETIC nanoparticle hyperthermia
*NANOPARTICLES
*MAGNETIC fields
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Language
ISSN
2158-3226
Abstract
In this paper, magnetically tunable random lasing from a polymer dispersed liquid crystal (PDLC) in a capillary was achieved by means of doping with magnetic nanoparticles (MNPs). We experimentally explored the effects of the concentration of MNPs and the amplitude and direction of the magnetic field on the emission properties of random lasing, such as threshold, envelope of the emission spectrum, and intensities. The related mechanism was also investigated theoretically. Experimental results also showed that weakly tuned effects appeared from the sample with a polymer or pure liquid crystal (LC) doped with MNPs in comparison with PDLCs. Our research would provide an additional way to achieve tunable compact LC-based lasers. [ABSTRACT FROM AUTHOR]