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Applied Surface Science, 2018
Abstract Nonlinear optical effect such as saturable absorption (SA) and reverse saturable absorption (RSA) play a key role for all-optical logic gates, in which transition between them is a challenging issue for the optoelectronic applications. Herein, we find MoTe2 nano-films fabricated with liquid-phase exfoliation and a vacuum filtration method ...
Yuanyuan Huang, Xinlong Xu
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Abstract Nonlinear optical effect such as saturable absorption (SA) and reverse saturable absorption (RSA) play a key role for all-optical logic gates, in which transition between them is a challenging issue for the optoelectronic applications. Herein, we find MoTe2 nano-films fabricated with liquid-phase exfoliation and a vacuum filtration method ...
Yuanyuan Huang, Xinlong Xu
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Transition from saturable absorption to reverse saturable absorption in multi-layered WS2 nanosheets
Optics & Laser Technology, 2021Abstract By employing the Z-scan technique, the nonlinear optical (NLO) properties of multi-layered WS2 nanosheets (WNSs) are investigated using pulsed (10 ns) laser irradiation having wavelength of 532 nm. In the trilayer WNSs, the transformation from saturable absorption (SA) to reverse saturation absorption (RSA) is clearly observed only when the ...
Srikanta Karmakar +2 more
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Reverse saturable absorption and saturable absorption in doped xerogels
Conference on Lasers and Electro-Optics Europe, 1994Organic molecules often present, at given wavelengths, reverse saturable absorption behavior:1–5 at low fluences, the absorption is weak; at high fluences, some molecules are excited to the first excited state whose absorption is greater. Aluminophthalocyanines encaged in solid inorganic xerogel silica matrices obtained from tetraethoxysilane ...
M. Brunel +4 more
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Saturable absorption and reverse saturable absorption in platinum nanoparticles
Optics Communications, 2005Abstract The optical nonlinear absorption of the aqueous solution of platinum nanospheres protected by poly ( N -vinyl-2-pyrrolidone) was investigated using open aperture Z -scan method with nanosecond pulse laser at the wavelength of 532 nm.
Yachen Gao +7 more
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Reverse saturable absorption in tetraphenylporphyrins
Optics Communications, 1985Abstract A decrease of the light transmission with increasing excitation intensity is observed in tetraphenylporphyrin/toluene solutions irradiated with 80 ps pulses at λ=532 nm. The experimental data are compared with simulations using a rate equation model. Excited state absorption cross-sections are evaluated.
W. Blau +3 more
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Reverse saturable absorption in metal cluster compounds
Optics Letters, 1990We report a new family of organometallic compounds that exhibit optical limiting through reverse saturable absorption. The optical limiting properties of the metal cluster compounds HFeCo(3)(CO)(12), [NEt(4)](+)FeCo(3)(CO)(12),(-) HFeCo(3)(CO)(10)(PMe(3))(2) and HFeCo(3)(CO)(10)(P(C(6)H(5))(3))(2) were measured at 532 nm using 8-nsec pulses.
L W, Tutt, S W, McCahon
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Saturable absorption and reverse saturable absorption on silver particles with different shapes
Applied Physics A, 2014Micro/nanostructured silver particles with different shapes (flower, wire, and rod) have been prepared and characterized. All the open aperture z-scan curves of silver microrods and silver nanoflowers present a typical reverse saturable absorption.
Suilian Luo +4 more
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Reverse Saturable Absorption followed by Anomalous Saturable Absorption in Rhodamine-700
13th International Conference on Fiber Optics and Photonics, 2016Anomalous SA (saturable absorption) in presence of reverse saturable absorption (RSA) in Rhodamine-700 is reported employing Z-scan with 100 ns, 250 Hz pulses in methanol. SA is observed only at a particular intensity range otherwise RSA survives.
Krishnandu Makhal +2 more
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Enhanced reverse saturable absorption and optical limiting in heavy-atom-substituted phthalocyanines [PDF]
Optics Letters, 1994 The reverse saturable absorption and the optical-limiting response of metal phthalocyanines can be enhanced by use of the heavy-atom effect. Phthalocyanines containing heavy-metal atoms, such as In, Sn, and Pb, show a nearly factor-of-2 enhancement in ...
Joseph W Perry, Kamjou Mansour
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