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Relevant bibliographies by topics / Reverse saturable absorption

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Journal articles
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Academic literature on the topic 'Reverse saturable absorption'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 February 2022

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Journal articles on the topic "Reverse saturable absorption"

1

Gao, Yachen, Xueru Zhang, Yuliang Li, et al. "Saturable absorption and reverse saturable absorption in platinum nanoparticles." Optics Communications 251, no. 4-6 (2005): 429–33. http://dx.doi.org/10.1016/j.optcom.2005.03.003.

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Blau, W., H. Byrne, W. M. Dennis, and J. M. Kelly. "Reverse saturable absorption in tetraphenylporphyrins." Optics Communications 56, no. 1 (1985): 25–29. http://dx.doi.org/10.1016/0030-4018(85)90059-8.

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Meškinis, Šarūnas, Andrius Vasiliauskas, Mindaugas Andrulevičius, et al. "Self-Saturable Absorption and Reverse-Saturable Absorption Effects in Diamond-Like Carbon Films with Embedded Copper Nanoparticles." Coatings 9, no. 2 (2019): 100. http://dx.doi.org/10.3390/coatings9020100.

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Nonlinear optical properties (self-saturable absorption and reverse-saturable absorption) of diamond-like carbon films with variable amounts of embedded copper nanoparticle (DLC:Cu) films deposited by high power pulse magnetron sputtering were studied in dependence on deposition conditions. X-ray photoelectron spectroscopy was used to study elemental composition and He ion microscopy to study changes of the size, shape, and concentration of the Cu nanoparticles deposited using different pulse currents as well as argon and acetylene gas ratios. Raman scattering spectra of DLC:Cu films studied were typical of diamond-like carbon (including the films with a high Cu atomic concentration where it was up to 60 atom % and carbon atomic concentration was less than 20 atom %). In all cases, in the absorption spectra of DLC:Cu films, the surface plasmon resonance-related peak was recorded. The position of the plasmonic peak for all the deposited nanocomposite films was in a 590–620 nm range. For the samples containing lower amounts of copper, reverse-saturable absorption was found. Transient optical absorption measurements have shown that the reverse-saturable absorption is typical for the samples with a lower relaxation time. The longer relaxation times recorded during transient optical absorption measurements correlated with the presence of the saturable absorption effect. For DLC:Cu samples containing 58–62 atom % Cu, some optical inhomogeneities were observed. The samples in different places demonstrated either saturable absorption or reverse-saturable absorption. The presence of both saturable and reverse-saturable absorption effects in the same sample is explained by the lateral inhomogeneities of the DLC:Cu films.

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Ouyang, Qiuyun, Hailong Yu, Kai Zhang, and Yujin Chen. "Saturable absorption and the changeover from saturable absorption to reverse saturable absorption of MoS2 nanoflake array films." J. Mater. Chem. C 2, no. 31 (2014): 6319–25. http://dx.doi.org/10.1039/c4tc00909f.

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MoS<sub>2</sub> nanoflake array films on different glass substrates were fabricated by an in situ growth method. The nonlinear absorption (NLA) properties of the MoS<sub>2</sub> nanoflake array films were investigated by an open-aperture Z-scan technique. The films exhibited different NLA properties dependent on the input energy.

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Luo, Suilian, Yao Chen, Guanghua Fan, Fengqiang Sun, and Shiliang Qu. "Saturable absorption and reverse saturable absorption on silver particles with different shapes." Applied Physics A 117, no. 2 (2014): 891–94. http://dx.doi.org/10.1007/s00339-014-8449-5.

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Tian, Xiangling, Rongfei Wei, Dandan Yang, and Jianrong Qiu. "Paradoxical combination of saturable absorption and reverse-saturable absorption in plasmon semiconductor nanocrystals." Nanoscale Advances 2, no. 4 (2020): 1676–84. http://dx.doi.org/10.1039/c9na00694j.

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The competition between plasma ground-state bleaching and three-photon absorption is demonstrated to be responsible for the transition between saturable absorption and reverse saturable absorption in aluminum-doped ZnO nanocrystals.

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Saad, Nabil A., Mudasir H. Dar, E. Ramya, Sri Ram G. Naraharisetty, and D. Narayana Rao. "Saturable and reverse saturable absorption of a Cu2O–Ag nanoheterostructure." Journal of Materials Science 54, no. 1 (2018): 188–99. http://dx.doi.org/10.1007/s10853-018-2811-5.

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Karmakar, Srikanta, Udit Chatterjee, and Pathik Kumbhakar. "Transition from saturable absorption to reverse saturable absorption in multi-layered WS2 nanosheets." Optics & Laser Technology 136 (April 2021): 106696. http://dx.doi.org/10.1016/j.optlastec.2020.106696.

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De Boni, L., D. C. J. Rezende, and C. R. Mendonça. "Reverse saturable absorption dynamics in indocyanine green." Journal of Photochemistry and Photobiology A: Chemistry 190, no. 1 (2007): 41–44. http://dx.doi.org/10.1016/j.jphotochem.2007.03.010.

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Tutt, L. W., and S. W. McCahon. "Reverse saturable absorption in metal cluster compounds." Optics Letters 15, no. 12 (1990): 700. http://dx.doi.org/10.1364/ol.15.000700.

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Dissertations / Theses on the topic "Reverse saturable absorption"

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Robertson, John Michael. "Nonlinear optical properties of absorbing molecular systems." Thesis, University of Essex, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390961.

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Clements, Andrew Franklin. "Photophysics of C60 Colloids." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/265338.

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The goal of this dissertation is to study the photophysics of suspensions of colloidal C₆₀ particles to determine if their nonlinear optical (NLO) response is superior in any way to benchmark NLO materials such as molecular solutions of C₆₀ and carbon black suspensions (CBS). C₆₀ in molecular form is known to exhibit strong reverse saturable absorption (RSA) and it is posited that colloidal particles composed of many C₆₀ molecules would maintain some degree of RSA behavior upon association, although some quenching is to be expected. CBS is known to have an NLO response that is dominated by nonlinear scattering resulting from a phase change due to heating of the carbon black particles by absorbed energy. Colloidal C₆₀ particles that are many nanometers in diameter are similar to CBS, so it is posited that they would also have a nonlinear scattering mechanism contributing to their NLO response. Three samples of C₆₀ colloids are characterized by several techniques, along with two carbon black suspensions and one molecular solution of C₆₀. Transmission electron microscopy is used to determine morphology. Femtosecond pump-probe spectroscopy is used to determine the absorption spectrum and the relaxation kinetics of the first excited singlet state. Nanosecond laser flash photolysis is used to determine the absorption spectrum and the relaxation kinetics of the first excited triplet state. Z-scan is used to determine triplet-triplet absorption cross-sections. An experiment is performed to determine the percentage of the input energy that is transmitted, scattered, or absorbed by each sample. Computer modeling is performed to compare the experimental results to theory. Results show that all materials that exhibit nonlinear scattering have a constant extinction coefficient in the nonlinear regime, implying a characteristic size for the scattering centers that is independent of input energy. Quenching processes in C₆₀ colloids are found to be morphology dependent, with more crystalline structures resulting in stronger quenching and less RSA. C₆₀ colloids with stronger RSA are found to result in less nonlinear scattering than strongly quenched colloids. Highly crystalline C₆₀ colloids were shown to have a stronger NLO response than the benchmark materials at medium to high energies.

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Liu, Bingqing. "Synthesis, Photophysics, Reverse Saturable Absorption, and Photodynamic Therapy of Iridium(III) Complexes Bearing Different Degrees of p-conjugation on the Ligands." Diss., North Dakota State University, 2019. https://hdl.handle.net/10365/29885.

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Octahedral d6 iridium(III) complexes possess rich photophysical properties. The most distinct phtotphysical properties of the Ir(III) complexes are their high triplet excited-state formation quantum yields, long-lived triplet excited states, and feasile structural modifications. To better understand the impact of ligand -conjugation on the photophysics and reverse saturable absorption (RSA) or PDT of the Ir(III) complexes, six series of Ir(III) complexes bearing various bidentate or terdentate ligands were designed and synthesized in this dissertation. In Chapter 1, the photophysical principles, typical electronic transitions in Ir(III) complexes, the prototypes of the tris-bidentate and bis-terdentate Ir(III) complexes, the state-of-art on exploring Ir(III) complexes for RSA and PDT, and the materials design criteria are reviewed. In Chapters 2 and 3, sixteen cyclometalated cationic Ir(III) complexes were synthesized and investigated to understand how the benzannulation site on diimine ligands influences the characteristics of the excited states of these complexes. The site−dependent benzannulation influenced the spectral feature and intensity of the triplet transient absorption (TA) and T1 lifetimes, and their RSA strength. In Chapter 4, ten 2-phenylpyridine based Ir(III) complexes with varied degrees of π-conjugation and sites of benzannulation were synthesized. Benzannulation at the different sites of 2-phenylpyridine exerted a different effect on the energies of the S1 and T1 excited states, the TA spectral features, and the RSA performances of the complexes. In Chapter 5, the synthesis, photophysics, and RSA of three Ir(III) complexes with different degrees of -conjugation on the diimine ligands were discussed. The impact of this structural variation on the RSA at 532 nm was demonstrated. In Chapter 6, five Ir(III) complexes bearing terpyridine-capped fluorenyl bridging ligands and different terminal terdentate ligands were investigated to reveal the effects of different terminal ligands on the S1 and T1 excited states. Their in vitro theranostic PDT effects toward the SKMEL28 cells were evaluated. In Chapter 7, the photophysics and in vitro PDT studies of five neutral Ir(III) complexes incorporating BODIPY-substituted N-heterocyclic carbene (NHC) ligands were studied. The attachment position of the BODIPY substituent did not alter the photophysical properties significantly but changed the dark- and photo- cytotoxicity of these complexes toward SKMEL28 cells.<br>National Science Foundation<br>U.S. Army Research Laboratory<br>North Dakota State University. Department of Chemistry and Biochemistry

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Neto, Newton Martins Barbosa. ""Estudo e desenvolvimento de limitadores ópticos"." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-23062005-140637/.

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Neste trabalho, com objetivo de desenvolvermos dispositivos de limitação óptica, estudamos o processo de absorção de estado excitados em um grupo de tetrapiridil porfirinas com diferentes substituintes centrais (2H+, Zn2+, Ni2+, Cu2+). Para isso utilizamos a técnica de varredura Z com pulsos de femto e picossegundos bem como com trem de pulsos. Desta forma, determinamos a dinâmica de absorção de estados excitados, para estas moléculas, obtendo parâmetros espectroscópicos tais como tempo de cruzamento intersistema, e as seções de choque de absorção dos primeiros estados excitados singleto e tripleto. Além disso, visando aproveitar os processos ópticos acumulativos de alguns materiais não lineares, em aplicação de limitação óptica, desenvolvemos uma nova geometria óptica denominada de limitador óptico de múltiplas passagens, a qual utiliza dois espelhos esféricos confocais e um espelho plano posicionado paralelamente a linha que une os espelhos esféricos.<br>In this work, aiming to develop optical limiting devices, we have studied excited state absorption process in a group of tetrapyridyl porphyrins with different central substitutes (2H+, Zn2+, Ni2+, Cu2+). We have employed Z-scan technique with femto and picosecond pulses as well as with pulse trains to determine the excited state absorption dynamics and obtain some spectroscopic parameters like intersystem crossing time and triplet and singlet excited state absorption cross-sections. Moreover, we have developed a new geometry for an optical limiter, named multipass optical limiter. It is formed by two confocal spherical mirrors together with a plane mirror placed in parallel with the line joining them.

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Conference papers on the topic "Reverse saturable absorption"

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Makhal, Krishnandu, Sidharth Maurya, and Debabrata Goswami. "Reverse Saturable Absorption followed by Anomalous Saturable Absorption in Rhodamine-700." In International Conference on Fibre Optics and Photonics. OSA, 2016. http://dx.doi.org/10.1364/photonics.2016.tu5d.2.

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Khodja, Salah, David J. Hagan, Jin H. Lim, et al. "Reverse saturable absorption in polymethine dyes." In Optical Science, Engineering and Instrumentation '97, edited by Christopher M. Lawson. SPIE, 1997. http://dx.doi.org/10.1117/12.284164.

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Husaini, Saima, Jonathan E. Slagle, Joel M. Murray, Shekhar Guha, Leonel P. Gonzalez, and Robert G. Bedford. "Broadband saturable and reverse saturable absorption in graphene-based nanocomposites." In CLEO: Science and Innovations. OSA, 2013. http://dx.doi.org/10.1364/cleo_si.2013.cw3o.7.

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4

Pritchett, Timothy M., Robert C. Hoffman, and Andrew G. Mott. "Z-scans with excited-state reverse saturable absorption." In Nonlinear Optics: Materials, Fundamentals and Applications. OSA, 2002. http://dx.doi.org/10.1364/nlo.2002.we29.

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Ferry, Michael J., Neal Bambha, William M. Shensky, Jianmin Shi, Ryan M. O'Donnell, and Trenton R. Ensley. "Reverse saturable absorption (RSA) in fluorinated iridium derivatives." In Light Manipulating Organic Materials and Devices IV, edited by Jon A. Schuller, Jean-Michel Nunzi, Manfred Eich, and Joy E. Haley. SPIE, 2017. http://dx.doi.org/10.1117/12.2272715.

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Brandelik, Donna M., L. R. Frock, Mark C. Brant, Daniel G. McLean, and Richard L. Sutherland. "Reverse saturable absorption properties of C 60 complexes." In SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, edited by Zakya H. Kafafi. SPIE, 1995. http://dx.doi.org/10.1117/12.228118.

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7

Azzam, Shaimaa I., and Alexander V. Kildishev. "Modeling time domain multiphysics of reverse saturable absorption." In 2018 International Applied Computational Electromagnetics Society Symposium (ACES). IEEE, 2018. http://dx.doi.org/10.23919/ropaces.2018.8364188.

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8

McLean, Daniel G. "New concentration gradient designs for reverse saturable absorption limiters." In Optical Science, Engineering and Instrumentation '97, edited by Christopher M. Lawson. SPIE, 1997. http://dx.doi.org/10.1117/12.290251.

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9

Qing, Chang, Chang Cun, Hongan Ye, et al. "The optical limiting properties of carbon and platinum nanocomposite with conversion characteristic from reverse saturable absorption to saturable absorption." In International Conference on Smart Materials and Nanotechnology in Engineering. SPIE, 2007. http://dx.doi.org/10.1117/12.780320.

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10

Devi, S. Maya, S. Sreeja, P. G. Louie Frobel, et al. "Saturable and Reverse Saturable Absorption in Nanocomposite Films of Naphthol Green B Dye-polymer System." In OPTICS: PHENOMENA, MATERIALS, DEVICES, AND CHARACTERIZATION: OPTICS 2011: International Conference on Light. AIP, 2011. http://dx.doi.org/10.1063/1.3643632.

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