Direct three-photon excitation of upconversion random laser emission in a weakly scattering organic colloidal system

Anderson S.L. Gomes; Mariana T. Carvalho; Christian T. Dominguez; Cid B. De Araújo; Paras N. Prasad

doi:10.1364/OE.22.014305

Direct three-photon excitation of upconversion random laser emission in a weakly scattering organic colloidal system

Anderson S.L. Gomes
, Mariana T. Carvalho
, Christian T. Dominguez
, Cid B. De Araújo
, Paras N. Prasad

Chemistry

Universidade Federal de Pernambuco

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

33 Scopus citations

Abstract

We report the operation and characterization of an upconversion random laser emitting at 560 nm, when directly pumped by three photon excitation at the near IR wavelength of 1350 nm in a colloidal dye solution in the weakly scattering regime. Using a special dye with a high threephoton cross-section and TiO₂ nanoparticles (250 nm diameter), optimized upconverted emission was obtained for particle densities of 2 x 109/cm3. A strong dependence on the nanoparticle concentration and the pumping area was verified. The presence of spikes with linewidths 0.4 nm in the emitted spectrum is the signature of coherent emission from this three-photon pumped random laser.

Original language	English
Pages (from-to)	14305-14310
Number of pages	6
Journal	Optics Express
Volume	22
Issue number	12
DOIs	https://doi.org/10.1364/OE.22.014305
State	Published - Jun 16 2014

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title = "Direct three-photon excitation of upconversion random laser emission in a weakly scattering organic colloidal system",

abstract = "We report the operation and characterization of an upconversion random laser emitting at 560 nm, when directly pumped by three photon excitation at the near IR wavelength of 1350 nm in a colloidal dye solution in the weakly scattering regime. Using a special dye with a high threephoton cross-section and TiO2 nanoparticles (250 nm diameter), optimized upconverted emission was obtained for particle densities of 2 x 109/cm3. A strong dependence on the nanoparticle concentration and the pumping area was verified. The presence of spikes with linewidths 0.4 nm in the emitted spectrum is the signature of coherent emission from this three-photon pumped random laser.",

author = "Gomes, \{Anderson S.L.\} and Carvalho, \{Mariana T.\} and Dominguez, \{Christian T.\} and \{De Ara{\'u}jo\}, \{Cid B.\} and Prasad, \{Paras N.\}",

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doi = "10.1364/OE.22.014305",

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T1 - Direct three-photon excitation of upconversion random laser emission in a weakly scattering organic colloidal system

AU - Gomes, Anderson S.L.

AU - Carvalho, Mariana T.

AU - Dominguez, Christian T.

AU - De Araújo, Cid B.

AU - Prasad, Paras N.

PY - 2014/6/16

Y1 - 2014/6/16

N2 - We report the operation and characterization of an upconversion random laser emitting at 560 nm, when directly pumped by three photon excitation at the near IR wavelength of 1350 nm in a colloidal dye solution in the weakly scattering regime. Using a special dye with a high threephoton cross-section and TiO2 nanoparticles (250 nm diameter), optimized upconverted emission was obtained for particle densities of 2 x 109/cm3. A strong dependence on the nanoparticle concentration and the pumping area was verified. The presence of spikes with linewidths 0.4 nm in the emitted spectrum is the signature of coherent emission from this three-photon pumped random laser.

AB - We report the operation and characterization of an upconversion random laser emitting at 560 nm, when directly pumped by three photon excitation at the near IR wavelength of 1350 nm in a colloidal dye solution in the weakly scattering regime. Using a special dye with a high threephoton cross-section and TiO2 nanoparticles (250 nm diameter), optimized upconverted emission was obtained for particle densities of 2 x 109/cm3. A strong dependence on the nanoparticle concentration and the pumping area was verified. The presence of spikes with linewidths 0.4 nm in the emitted spectrum is the signature of coherent emission from this three-photon pumped random laser.

UR - https://www.scopus.com/pages/publications/84902956092

U2 - 10.1364/OE.22.014305

DO - 10.1364/OE.22.014305

M3 - Article

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SN - 1094-4087

VL - 22

SP - 14305

EP - 14310

JO - Optics Express

JF - Optics Express

IS - 12

ER -

Direct three-photon excitation of upconversion random laser emission in a weakly scattering organic colloidal system

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