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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 17:46 |
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Conference: Bucharest University Faculty of Physics 2022 Meeting
Section: Polymer Physics
Title:
Special micrometric confined systems for crafting highly efficient light amplification and laser emission devices
Authors:
Valentin BARNA (1)
Affiliation:
1) University of Bucharest, Faculty of Physics, 405 Atomistilor Street, 077125, Magurele, Romania
E-mail
barnavalentin@yahoo.com
Keywords:
Small-scale light emitters, Micrometric systems, Micro-lens array
Abstract:
In this study we characterize laser action phenomena in special micrometric configurations of dye doped ionic liquids confined in special geometries. Because of low vapor pressure, low inflammability, liquidity over a broad temperature range, recyclability these matrices are excellent contenders for building, as demonstrated, a series of interesting mirrorless laser devices. Cylindrical micro-capillaries and special micro-lens array systems grant the possibility to obtain highly-compact hazard-free narrow banded (FWHM ca. 0.5 nm for each laser mode) emitters that outshine because of the low laser threshold (a few microJ/pulse in some situations), superior efficiency, long term robustness, cheap construction costs and versatility in terms of potential configurations. A detailed spectral analysis for the designed samples and an interpretation of the far field modal profiles is performed, which clearly confirms a random laser behavior for these systems. In addition, the presented small-size optical systems are also highly robust and prone for immediate exploitation in the micro technological arena.
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