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Amplified spontaneous emission in α-phase and β-phase polyfluorene waveguides

✍ Scribed by Hironobu Azuma; Takashi Kobayashi; Yonggu Shim; Nazim Mamedov; Hiroyoshi Naito

Book ID
104075850
Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
522 KB
Volume
8
Category
Article
ISSN
1566-1199

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✦ Synopsis

Amplified spontaneous emission (ASE) of a-and b-phase poly(9,9-dioctylfluorene) (F8) based waveguides has been studied and ASE wavelengths have been determined as 451 nm and 468 nm, respectively. b-phase waveguides are found to be with higher net gain and lower light propagation loss as compared to a-phase waveguides. Such important improvement of ASE properties, making b-phase waveguides superior over a-phase counterparts is shown to be achieved at the expense of higher refractive index and photoluminescence quantum efficiency of b-phase F8.

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