Optical power limiting properties of two-photon absorbing fluorene and dithienothiophene-based chromophores

Kwang Sup Lee, Hyun Kwan Yang, Jong Hyup Lee, Oh Kil Kim, Han Young Woo, Heayoung Choi, Myoungsik Cha, Mireille Blanchard-Desce

Research output: Contribution to journalConference article

12 Citations (Scopus)

Abstract

We have synthesized efficient two-photon absorbing fluorene and dithienothiophene (DTT) derivatives with electron donors (D) or electron acceptors (A) which are attached symmetrically or asymmetrically at the both end of conjugated links, forming D-π-D and D-π-A structures. The two-photon absorption (TPA) cross-section values (σ) of these chromophores were evaluated by the nonlinear transmission measurements using 8 ns laser pulse, and also by the two-photon-induced fluorescence method with 80 fs pulse laser. The σ values obtained were larger by the nanosecond pulse laser than that by the femtosecond laser. This result suggests that the relative contribution of the excited state absorption becomes more manifested when longer time scale pulses are used. The strong nonlinear absorption including TPA of all these materials induced an efficient optical power limiting (OPL) activity. The trend in OPL behavior agreed well with the size of the TPA intensity.

Original languageEnglish
Pages (from-to)175-182
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4991
DOIs
Publication statusPublished - 2003 Nov 27
Externally publishedYes
EventPROCEEDINGS OF SPIE SPIE - The International Society for Optical Engineering: Organic Photonic Materials and Devices V - San Jose, CA, United States
Duration: 2003 Jan 272003 Jan 30

Fingerprint

Chromophores
Absorbing
Two-photon Absorption
chromophores
Photon
Photons
Limiting
photons
Laser
Laser pulses
pulses
lasers
Electron
Nonlinear Absorption
Femtosecond Laser
Limiting Behavior
Excited States
Fluorescence
Electrons
Time Scales

Keywords

  • Dithienothiophene
  • Optical power limiting activity
  • Two-photon absorption; fluorene

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Optical power limiting properties of two-photon absorbing fluorene and dithienothiophene-based chromophores. / Lee, Kwang Sup; Yang, Hyun Kwan; Lee, Jong Hyup; Kim, Oh Kil; Woo, Han Young; Choi, Heayoung; Cha, Myoungsik; Blanchard-Desce, Mireille.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 4991, 27.11.2003, p. 175-182.

Research output: Contribution to journalConference article

Lee, Kwang Sup ; Yang, Hyun Kwan ; Lee, Jong Hyup ; Kim, Oh Kil ; Woo, Han Young ; Choi, Heayoung ; Cha, Myoungsik ; Blanchard-Desce, Mireille. / Optical power limiting properties of two-photon absorbing fluorene and dithienothiophene-based chromophores. In: Proceedings of SPIE - The International Society for Optical Engineering. 2003 ; Vol. 4991. pp. 175-182.
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AU - Lee, Kwang Sup

AU - Yang, Hyun Kwan

AU - Lee, Jong Hyup

AU - Kim, Oh Kil

AU - Woo, Han Young

AU - Choi, Heayoung

AU - Cha, Myoungsik

AU - Blanchard-Desce, Mireille

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N2 - We have synthesized efficient two-photon absorbing fluorene and dithienothiophene (DTT) derivatives with electron donors (D) or electron acceptors (A) which are attached symmetrically or asymmetrically at the both end of conjugated links, forming D-π-D and D-π-A structures. The two-photon absorption (TPA) cross-section values (σ) of these chromophores were evaluated by the nonlinear transmission measurements using 8 ns laser pulse, and also by the two-photon-induced fluorescence method with 80 fs pulse laser. The σ values obtained were larger by the nanosecond pulse laser than that by the femtosecond laser. This result suggests that the relative contribution of the excited state absorption becomes more manifested when longer time scale pulses are used. The strong nonlinear absorption including TPA of all these materials induced an efficient optical power limiting (OPL) activity. The trend in OPL behavior agreed well with the size of the TPA intensity.

AB - We have synthesized efficient two-photon absorbing fluorene and dithienothiophene (DTT) derivatives with electron donors (D) or electron acceptors (A) which are attached symmetrically or asymmetrically at the both end of conjugated links, forming D-π-D and D-π-A structures. The two-photon absorption (TPA) cross-section values (σ) of these chromophores were evaluated by the nonlinear transmission measurements using 8 ns laser pulse, and also by the two-photon-induced fluorescence method with 80 fs pulse laser. The σ values obtained were larger by the nanosecond pulse laser than that by the femtosecond laser. This result suggests that the relative contribution of the excited state absorption becomes more manifested when longer time scale pulses are used. The strong nonlinear absorption including TPA of all these materials induced an efficient optical power limiting (OPL) activity. The trend in OPL behavior agreed well with the size of the TPA intensity.

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