Lasing from a conjugated polymer at selectable areas and at tunable wavelengths via electron irradiation

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A simple approach to producing tunable lasing is explored. In this work, a basic planar lasing system with a layer of light emitting conjugated polymer, MEH-PPV, sandwiched between a distributed Bragg reflector (DBR) and silver is utilized. By irradiating MEH-PPV with electrons, the photoluminescence (PL) spectrum of MEH-PPV undergoes blueshift and peak broadening, which in turn alters the lasing wavelength. Furthermore, patterning the MEH-PPV layer by electron irradiation and employing filters allow lasing to be controlled to occur only at certain areas. Thus, our approach allows the fabricated system to possess significant tunability, a highly sought out trait in the field of lasing. The detailed methodology by which tunable lasing is achieved is discussed along with the mechanism behind the irradiation-induced blueshift of the PL spectrum.
Publisher
ELSEVIER
Issue Date
2020-08
Language
English
Article Type
Article
Citation

OPTICAL MATERIALS, v.106

ISSN
0925-3467
DOI
10.1016/j.optmat.2020.110016
URI
http://hdl.handle.net/10203/275475
Appears in Collection
NE-Journal Papers(저널논문)
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