Amplified spontaneous emission in optically pumped neat films of a polyfluorene derivative

Jiu Yan Li; Frédéric Laquai; Gerhard Wegner

doi:10.1016/j.cplett.2009.07.028

Amplified spontaneous emission in optically pumped neat films of a polyfluorene derivative

Jiu Yan Li^*, Frédéric Laquai, Gerhard Wegner

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

We report the emissive properties of a fluorene-based polymer, PF-1SOR, in planar asymmetric waveguides under optical pumping. A laser beam homogenizer setup was applied to achieve the flat-top intensity profile of the excitation light. Amplification of deep blue light via stimulated emission (SE) occurred at an energy threshold of 11 μJ cm^-2 and the amplified spontaneous emission (ASE) peak could be tuned from 411 to 423 nm. A net gain coefficient of 19.8 cm^-1 was obtained by means of the modified variable stripe length (VSL) method. The PF-1SOR thin films delivered a remarkably low loss coefficient of 1.5 cm^-1, among the lowest ever reported for a single component polymer waveguide.

Original language	English (US)
Pages (from-to)	37-41
Number of pages	5
Journal	Chemical Physics Letters
Volume	478
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2009.07.028
State	Published - Aug 17 2009
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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title = "Amplified spontaneous emission in optically pumped neat films of a polyfluorene derivative",

abstract = "We report the emissive properties of a fluorene-based polymer, PF-1SOR, in planar asymmetric waveguides under optical pumping. A laser beam homogenizer setup was applied to achieve the flat-top intensity profile of the excitation light. Amplification of deep blue light via stimulated emission (SE) occurred at an energy threshold of 11 μJ cm-2 and the amplified spontaneous emission (ASE) peak could be tuned from 411 to 423 nm. A net gain coefficient of 19.8 cm-1 was obtained by means of the modified variable stripe length (VSL) method. The PF-1SOR thin films delivered a remarkably low loss coefficient of 1.5 cm-1, among the lowest ever reported for a single component polymer waveguide.",

author = "Li, {Jiu Yan} and Fr{\'e}d{\'e}ric Laquai and Gerhard Wegner",

year = "2009",

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doi = "10.1016/j.cplett.2009.07.028",

language = "English (US)",

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journal = "Chemical Physics Letters",

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T1 - Amplified spontaneous emission in optically pumped neat films of a polyfluorene derivative

AU - Li, Jiu Yan

AU - Laquai, Frédéric

AU - Wegner, Gerhard

PY - 2009/8/17

Y1 - 2009/8/17

N2 - We report the emissive properties of a fluorene-based polymer, PF-1SOR, in planar asymmetric waveguides under optical pumping. A laser beam homogenizer setup was applied to achieve the flat-top intensity profile of the excitation light. Amplification of deep blue light via stimulated emission (SE) occurred at an energy threshold of 11 μJ cm-2 and the amplified spontaneous emission (ASE) peak could be tuned from 411 to 423 nm. A net gain coefficient of 19.8 cm-1 was obtained by means of the modified variable stripe length (VSL) method. The PF-1SOR thin films delivered a remarkably low loss coefficient of 1.5 cm-1, among the lowest ever reported for a single component polymer waveguide.

AB - We report the emissive properties of a fluorene-based polymer, PF-1SOR, in planar asymmetric waveguides under optical pumping. A laser beam homogenizer setup was applied to achieve the flat-top intensity profile of the excitation light. Amplification of deep blue light via stimulated emission (SE) occurred at an energy threshold of 11 μJ cm-2 and the amplified spontaneous emission (ASE) peak could be tuned from 411 to 423 nm. A net gain coefficient of 19.8 cm-1 was obtained by means of the modified variable stripe length (VSL) method. The PF-1SOR thin films delivered a remarkably low loss coefficient of 1.5 cm-1, among the lowest ever reported for a single component polymer waveguide.

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U2 - 10.1016/j.cplett.2009.07.028

DO - 10.1016/j.cplett.2009.07.028

M3 - Article

AN - SCOPUS:68049109370

SN - 0009-2614

VL - 478

SP - 37

EP - 41

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-3

ER -

Amplified spontaneous emission in optically pumped neat films of a polyfluorene derivative

Abstract

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