Low-threshold amplified spontaneous emission in thin films of poly(tetraarylindenofluorene)

Fŕd́ric Laquai; Panagiotis E. Keivanidis; Stanislav Baluschev; Josemon Jacob; Klaus Müllen; Gerhard Wegner

doi:10.1063/1.2158508

Low-threshold amplified spontaneous emission in thin films of poly(tetraarylindenofluorene)

Fŕd́ric Laquai^*, Panagiotis E. Keivanidis, Stanislav Baluschev, Josemon Jacob, Klaus Müllen, Gerhard Wegner

^*Corresponding author for this work

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

17 Scopus citations

Abstract

We report on amplification of blue light (469 nm) via amplified spontaneous emission in asymmetric planar waveguides of a fully arylated polyindenofluorene derivative. A very low threshold value of about 3 μJ cm2 (∼375 W cm2) for amplification of light has been demonstrated by pumping the waveguides at 3.0 eV (410 nm) with a stripe shape excitation beam. Moderate gain coefficients up to 21 cm-1 and loss coefficients around 6 cm-1 have been measured. All measurements were performed under ambient conditions. No sample degradation could be observed which testifies to the excellent stability of the material against photodegradation.

Original language	English (US)
Article number	261917
Pages (from-to)	1-3
Number of pages	3
Journal	Applied Physics Letters
Volume	87
Issue number	26
DOIs	https://doi.org/10.1063/1.2158508
State	Published - 2005
Externally published	Yes

Bibliographical note

Funding Information:
The authors acknowledge financial support by the German Ministry of Science and Education, Project OLAS, 13N8168. One of the authors (F.L.) wishes to thank the Fonds der Chemischen Industrie for providing a Kekulé scholarship. The authors acknowledge experimental assistance from H. Menges.

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Low-threshold amplified spontaneous emission in thin films of poly(tetraarylindenofluorene)",

abstract = "We report on amplification of blue light (469 nm) via amplified spontaneous emission in asymmetric planar waveguides of a fully arylated polyindenofluorene derivative. A very low threshold value of about 3 μJ cm2 (∼375 W cm2) for amplification of light has been demonstrated by pumping the waveguides at 3.0 eV (410 nm) with a stripe shape excitation beam. Moderate gain coefficients up to 21 cm-1 and loss coefficients around 6 cm-1 have been measured. All measurements were performed under ambient conditions. No sample degradation could be observed which testifies to the excellent stability of the material against photodegradation.",

author = "F{\'r}{\'d}ric Laquai and Keivanidis, {Panagiotis E.} and Stanislav Baluschev and Josemon Jacob and Klaus M{\"u}llen and Gerhard Wegner",

note = "Funding Information: The authors acknowledge financial support by the German Ministry of Science and Education, Project OLAS, 13N8168. One of the authors (F.L.) wishes to thank the Fonds der Chemischen Industrie for providing a Kekul{\'e} scholarship. The authors acknowledge experimental assistance from H. Menges. ",

year = "2005",

doi = "10.1063/1.2158508",

language = "English (US)",

volume = "87",

pages = "1--3",

journal = "Applied Physics Letters",

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T1 - Low-threshold amplified spontaneous emission in thin films of poly(tetraarylindenofluorene)

AU - Laquai, Fŕd́ric

AU - Keivanidis, Panagiotis E.

AU - Baluschev, Stanislav

AU - Jacob, Josemon

AU - Müllen, Klaus

AU - Wegner, Gerhard

N1 - Funding Information: The authors acknowledge financial support by the German Ministry of Science and Education, Project OLAS, 13N8168. One of the authors (F.L.) wishes to thank the Fonds der Chemischen Industrie for providing a Kekulé scholarship. The authors acknowledge experimental assistance from H. Menges.

PY - 2005

Y1 - 2005

N2 - We report on amplification of blue light (469 nm) via amplified spontaneous emission in asymmetric planar waveguides of a fully arylated polyindenofluorene derivative. A very low threshold value of about 3 μJ cm2 (∼375 W cm2) for amplification of light has been demonstrated by pumping the waveguides at 3.0 eV (410 nm) with a stripe shape excitation beam. Moderate gain coefficients up to 21 cm-1 and loss coefficients around 6 cm-1 have been measured. All measurements were performed under ambient conditions. No sample degradation could be observed which testifies to the excellent stability of the material against photodegradation.

AB - We report on amplification of blue light (469 nm) via amplified spontaneous emission in asymmetric planar waveguides of a fully arylated polyindenofluorene derivative. A very low threshold value of about 3 μJ cm2 (∼375 W cm2) for amplification of light has been demonstrated by pumping the waveguides at 3.0 eV (410 nm) with a stripe shape excitation beam. Moderate gain coefficients up to 21 cm-1 and loss coefficients around 6 cm-1 have been measured. All measurements were performed under ambient conditions. No sample degradation could be observed which testifies to the excellent stability of the material against photodegradation.

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U2 - 10.1063/1.2158508

DO - 10.1063/1.2158508

M3 - Article

AN - SCOPUS:29744450722

SN - 0003-6951

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SP - 1

EP - 3

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 26

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ER -

Low-threshold amplified spontaneous emission in thin films of poly(tetraarylindenofluorene)

Abstract

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