Laser-pointer-induced self-focusing effect in hybrid-aligned dye-doped liquid crystals

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Laser-pointer-induced self-focusing effect in hybrid-aligned dye-doped liquid crystals. / Wang, Jing; Aihara, Yosuke; Kinoshita, Motoi; Mamiya, Jun-ichi; Priimagi, Arri; Shishido, Atsushi.

In: Scientific Reports, Vol. 5, 9890, 06.05.2015.

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

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Wang, Jing ; Aihara, Yosuke ; Kinoshita, Motoi ; Mamiya, Jun-ichi ; Priimagi, Arri ; Shishido, Atsushi. / Laser-pointer-induced self-focusing effect in hybrid-aligned dye-doped liquid crystals. In: Scientific Reports. 2015 ; Vol. 5.

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@article{9bfbffc4c202462bb289eddab5360a5c,

title = "Laser-pointer-induced self-focusing effect in hybrid-aligned dye-doped liquid crystals",

abstract = "Nonlinear optics deals with phenomena where {"}light controls light{"}; e.g., there is mediation by an intensity-dependent medium through which light propagates. This field has attracted much attention for its immense potential in applications dependent on nonlinear processes, such as frequency conversion, multiple-photon absorption, self-phase modulation, and so on. However, such nonlinearities are typically only observed at very high light intensities and thus they require costly lasers. Here, we report on a self-focusing effect induced with a 1 mW handheld laser pointer. We prepared polymer-stabilized dye-doped liquid crystals, in which the molecular director orientation gradually changes from homeotropic at one surface to homogeneous at the other. This is referred to as hybrid alignment. In such films, the threshold intensity needed to form diffraction rings was reduced by a factor of 8.5 compared to that in conventional homeotropic cells, which enabled the induction of the self-focusing effect with a laser pointer.",

keywords = "ORIENTATIONAL OPTICAL NONLINEARITY, GENERATION, STORAGE, LIGHT",

author = "Jing Wang and Yosuke Aihara and Motoi Kinoshita and Jun-ichi Mamiya and Arri Priimagi and Atsushi Shishido",

year = "2015",

month = "5",

day = "6",

doi = "10.1038/srep09890",

language = "English",

volume = "5",

journal = "Scientific Reports",

issn = "2045-2322",

publisher = "Nature Publishing Group",

}

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TY - JOUR

T1 - Laser-pointer-induced self-focusing effect in hybrid-aligned dye-doped liquid crystals

AU - Wang, Jing

AU - Aihara, Yosuke

AU - Kinoshita, Motoi

AU - Mamiya, Jun-ichi

AU - Priimagi, Arri

AU - Shishido, Atsushi

PY - 2015/5/6

Y1 - 2015/5/6

N2 - Nonlinear optics deals with phenomena where "light controls light"; e.g., there is mediation by an intensity-dependent medium through which light propagates. This field has attracted much attention for its immense potential in applications dependent on nonlinear processes, such as frequency conversion, multiple-photon absorption, self-phase modulation, and so on. However, such nonlinearities are typically only observed at very high light intensities and thus they require costly lasers. Here, we report on a self-focusing effect induced with a 1 mW handheld laser pointer. We prepared polymer-stabilized dye-doped liquid crystals, in which the molecular director orientation gradually changes from homeotropic at one surface to homogeneous at the other. This is referred to as hybrid alignment. In such films, the threshold intensity needed to form diffraction rings was reduced by a factor of 8.5 compared to that in conventional homeotropic cells, which enabled the induction of the self-focusing effect with a laser pointer.

AB - Nonlinear optics deals with phenomena where "light controls light"; e.g., there is mediation by an intensity-dependent medium through which light propagates. This field has attracted much attention for its immense potential in applications dependent on nonlinear processes, such as frequency conversion, multiple-photon absorption, self-phase modulation, and so on. However, such nonlinearities are typically only observed at very high light intensities and thus they require costly lasers. Here, we report on a self-focusing effect induced with a 1 mW handheld laser pointer. We prepared polymer-stabilized dye-doped liquid crystals, in which the molecular director orientation gradually changes from homeotropic at one surface to homogeneous at the other. This is referred to as hybrid alignment. In such films, the threshold intensity needed to form diffraction rings was reduced by a factor of 8.5 compared to that in conventional homeotropic cells, which enabled the induction of the self-focusing effect with a laser pointer.

KW - ORIENTATIONAL OPTICAL NONLINEARITY

KW - GENERATION

KW - STORAGE

KW - LIGHT

U2 - 10.1038/srep09890

DO - 10.1038/srep09890

M3 - Article

VL - 5

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 9890

ER -

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