http://www.cnr.it/ontology/cnr/individuo/prodotto/ID315501

Polymer nanofibers as novel light-emitting sources and lasing material (Comunicazione a convegno)

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Label

Polymer nanofibers as novel light-emitting sources and lasing material (Comunicazione a convegno) (literal)

Anno

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Alternative label

Camposeo, A.; Persano, L.; Pisignano, D. (2013)
Polymer nanofibers as novel light-emitting sources and lasing material
in International Conference SPIE 2013, San Diego (USA), 25-29/08/2013
(literal)

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http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1745854 (literal)

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Proceedings of SPIE - The International Society for Optical Engineering (literal)

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National Nanotechnology Laboratory of Istituto Nanoscienze, CNR (Italy) (literal)

Titolo

Polymer nanofibers as novel light-emitting sources and lasing material (literal)

Abstract

Polymer micro-and nano-fibers, made of organic light-emitting materials with optical gain, show interesting lasing properties. Fibers with diameters from few tens of nm to few microns can be fabricated by electrospinning, a method based on electrostatic fields applied to a polymer solution. The morphology and emission properties of these fibers, composed of optically inert polymers embedding laser dyes, are characterized by scanning electron and fluorescence microscopy, and lasing is observed under optical pumping for fluences of the order of 10(2) mu J cm(-2). In addition, light-emitting fibers can be electrospun by conjugated polymers, their blends, and other active organics, and can be exploited in a range of photonic and electronic devices. In particular, waveguiding of light is observed and characterized, showing optical loss coefficient in the range of 10(2)-10(3) cm(-1). The reduced size of these novel laser systems, combined with the possibility of achieving wavelength tunability through transistor or other electrode-based architectures embedding non-linear molecular layers, and with their peculiar mechanical robustness, open interesting perspectives for realizing miniaturized laser sources to integrate on-chip optical sensors and photonic circuits. (literal)

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