Conjugated polymer-fullerene blend with strong optical limiting in the near-infrared

Chi, San‐Hui; Hales, Joel M.; Cozzuol, Matteo; Ochoa, Charles; Fitzpatrick, M.; Perry, Joseph W.

doi:10.1364/oe.17.022062

Cited by 28 publications

(19 citation statements)

References 32 publications

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“…Such kind of behavior has also been observed in gold–silver alloy nanoparticles, gallium phthalocyanines and naphthalocyanines, ruthenium (II) complex, etc. . Thus the optical limiting response indicates that the Mg‐doped ZnO film can be a potential candidate material for optical limiting device applications at 632.8 nm.…”

Section: Resultsmentioning

confidence: 90%

Study of nonlinear optical properties of pure and Mg-doped ZnO films

Agrawal

Dar

Solanki

et al. 2015

Phys. Status Solidi B

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We report the nonlinear optical properties in pulsed laser deposited pure and Mg‐doped ZnO films at an excitation energy (≈1.95 eV) much smaller than the band gap energies (≥3.24 eV) of the films. The nonlinear absorption is attributed to the presence of defect states whereas the nonlinear refraction arises due to thermal lensing effect. Larger contribution of nonlinear absorption compared to nonlinear refraction suggests the utility of Mg‐doped ZnO films in optical limiting device applications.

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Section: Resultsmentioning

confidence: 90%

Study of nonlinear optical properties of pure and Mg-doped ZnO films

Agrawal

Dar

Solanki

et al. 2015

Phys. Status Solidi B

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“…This is defined as any process the limits the amount of light that can get through a material at high intensity. It has the potential application of protecting sensitive detectors and eyes from high power lasers (Tutt, 1993;Chi 2009;Kamina, 2009). With the advent of nanocrystals, research to find practical materials has exploded, yet to date it does not appear that any particular material stands out as viable.…”

Section: Multi-photon Absorptionmentioning

confidence: 99%

Overview of Nonlinear Optics

Garmire¹

2012

Nonlinear Optics

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“…threephoton absorption). Numerical simulations of nonlinear beam propagation [3,4,37] were used to model both the two-photon-accessed excited-state nonlinear process and the three-photon nonlinear absorption in order to better understand the contributing nonlinear process. For the simulations, most of the possible fitting parameters-beam profile, pulse width, concentration, thickness, and linear transmittance-were experimentally determined.…”

Section: Dispersion Of Nonlinear Absorption Of Ospznos In the Near Irmentioning

confidence: 99%

“…Enhancement of nonlinear absorption is of great interest due to the important roles played by nonlinear absorbers in photonic applications such as optical switching, noise suppression and sensor protection [1][2][3][4][5][6][7][8][9][10]. Molecular engineering of chromophores has been one of the major pathways that has been exploited to achieve stronger nonlinear absorption [1,9,[11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Near IR nonlinear absorption of an organic supermolecule [Invited]

Chi¹,

Rosenberg²,

Nayak³

et al. 2011

Opt. Mater. Express

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DescriptionThe photophysics of bis(terpyridyl)osmium-(porphinato)zinc-bis(terpyridyl)osmium (OsPZnOs), a D-π-A-π-D symmetric supermolecule, were investigated in the femtosecond and nanosecond regimes. The supermolecule exhibits a two-photon absorption (δ peak~9 00 GM) in the near IR (900-1300 nm) and optical pumping by two-photon absorption leads to a broad excited state absorption (σ peak~1 .1 × 10 −16 cm 2 ) in the same near IR region. Since the excited state has a long lifetime, OsPZnOs exhibits a strong nanosecond nonlinear absorption in this region. That nonlinear absorption is substantially enhanced when OsPZnOs is incorporated into a multimode waveguide. When two-photon pumping is the dominant mechanism, an additional enhancement of up to ~100 × in the nonlinear absorption is observed in a microchannel waveguide. OsPZnOs is a promising material for photonic applications such as optical noise suppression and optical limiting in the near IR. Disciplines Physical Sciences and Mathematics | Physics Comments ©2011 Optical Society of AmericaThis paper was published in Optics Materials Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/ 10.1364/OME.1.001383. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law. RightsTerms of use for work posted in CommonKnowledge. AuthorsSan-Hui Chi, Armand Rosenberg, Animesh Nayak, Timothy V. Duncan, Michael J. Therien, James J. were investigated in the femtosecond and nanosecond regimes. The supermolecule exhibits a two-photon absorption (δ peak ~900 GM) in the near IR (900-1300 nm) and optical pumping by two-photon absorption leads to a broad excited state absorption (σ peak ~1.1 × 10 −16 cm 2 ) in the same near IR region. Since the excited state has a long lifetime, OsPZnOs exhibits a strong nanosecond nonlinear absorption in this region. That nonlinear absorption is substantially enhanced when OsPZnOs is incorporated into a multimode waveguide. When two-photon pumping is the dominant mechanism, an additional enhancement of up to ~100 × in the nonlinear absorption is observed in a microchannel waveguide. OsPZnOs is a promising material for photonic applications such as optical noise suppression and optical limiting in the near IR.

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Conjugated polymer-fullerene blend with strong optical limiting in the near-infrared

Cited by 28 publications

References 32 publications

Study of nonlinear optical properties of pure and Mg-doped ZnO films

Study of nonlinear optical properties of pure and Mg-doped ZnO films

Overview of Nonlinear Optics

Near IR nonlinear absorption of an organic supermolecule [Invited]

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