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Picosecond z-scan measurements of the two-photon absorption in beta-carotene solution over the 590-790 nm wavelength range

Major, A. ; Yoshino, F. ; Aitchison, J. S. ; Smith, P. W.E. ; Zigmantas, D. LU orcid and Barzda, V. (2005) Organic Photonic Materials and Devices VII In Proceedings of SPIE - The International Society for Optical Engineering 5724. p.269-276
Abstract

The two-photon absorption (TPA) properties of β-carotene (beta-carotene) in chloroform solution were investigated over the 590-790 nm wavelength range. The TPA was characterized using the open-aperture z-scan technique with picosecond pulses provided by a widely traveling-wave optical parametric amplifier (OPA) pumped with a Ti:sapphire laser amplifier. We found the 0.2-1 cm/GW values of two photon absorption coefficient in the 725-790 nm wavelength region. At shorter wavelengths, a dramatic increase in the two-photon absorption around 600 nm was observed. The observed two photon absorption dependence on the excitation wavelength can be explained by the onset of strong excitation from the ground state 1Ag to the higher lying... (More)

The two-photon absorption (TPA) properties of β-carotene (beta-carotene) in chloroform solution were investigated over the 590-790 nm wavelength range. The TPA was characterized using the open-aperture z-scan technique with picosecond pulses provided by a widely traveling-wave optical parametric amplifier (OPA) pumped with a Ti:sapphire laser amplifier. We found the 0.2-1 cm/GW values of two photon absorption coefficient in the 725-790 nm wavelength region. At shorter wavelengths, a dramatic increase in the two-photon absorption around 600 nm was observed. The observed two photon absorption dependence on the excitation wavelength can be explained by the onset of strong excitation from the ground state 1Ag to the higher lying two-photon allowed m2Ag band centered around 310 nm (∼4eV).

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author
; ; ; ; and
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
keywords
Nonlinear spectroscopy, Optical nonlinearities in organic materials, Two-photon absorption
host publication
Organic photonics materials and Devices VII, SPIE
series title
Proceedings of SPIE - The International Society for Optical Engineering
volume
5724
pages
8 pages
conference name
Organic Photonic Materials and Devices VII
conference location
San Jose, CA, United States
conference dates
2005-01-24 - 2005-01-26
external identifiers
  • scopus:21844446845
ISSN
0277-786X
DOI
10.1117/12.590669
language
English
LU publication?
no
id
4f0f520b-8526-4031-985e-b318d665f936
date added to LUP
2019-05-02 11:48:14
date last changed
2022-03-25 17:48:05
@inproceedings{4f0f520b-8526-4031-985e-b318d665f936,
  abstract     = {{<p>The two-photon absorption (TPA) properties of β-carotene (beta-carotene) in chloroform solution were investigated over the 590-790 nm wavelength range. The TPA was characterized using the open-aperture z-scan technique with picosecond pulses provided by a widely traveling-wave optical parametric amplifier (OPA) pumped with a Ti:sapphire laser amplifier. We found the 0.2-1 cm/GW values of two photon absorption coefficient in the 725-790 nm wavelength region. At shorter wavelengths, a dramatic increase in the two-photon absorption around 600 nm was observed. The observed two photon absorption dependence on the excitation wavelength can be explained by the onset of strong excitation from the ground state 1A<sub>g</sub> to the higher lying two-photon allowed m<sub>2</sub>A<sub>g</sub> band centered around 310 nm (∼4eV).</p>}},
  author       = {{Major, A. and Yoshino, F. and Aitchison, J. S. and Smith, P. W.E. and Zigmantas, D. and Barzda, V.}},
  booktitle    = {{Organic photonics materials and Devices VII, SPIE}},
  issn         = {{0277-786X}},
  keywords     = {{Nonlinear spectroscopy; Optical nonlinearities in organic materials; Two-photon absorption}},
  language     = {{eng}},
  month        = {{07}},
  pages        = {{269--276}},
  series       = {{Proceedings of SPIE - The International Society for Optical Engineering}},
  title        = {{Picosecond z-scan measurements of the two-photon absorption in beta-carotene solution over the 590-790 nm wavelength range}},
  url          = {{http://dx.doi.org/10.1117/12.590669}},
  doi          = {{10.1117/12.590669}},
  volume       = {{5724}},
  year         = {{2005}},
}