Results 31 to 40 of about 1,747,140 (249)

Exploration of Optical Properties of Novel Pyrene Derivatives Modified by Click Functionalization

Crystals, 2022
A simple synthetic method was designed, in which the Sonogashira coupling reaction and [2+2] cycloaddition click reaction with high yield were performed on 1-bromopyrene to obtain several novel pyrene derivatives.
Yang Yu, Yuzhen Zhao, Yongsheng Mi, Yang Zhao, Zhun Guo, Huimin Zhang, Dong Wang, Zongcheng Miao   +7 more
doaj   +1 more source

All-optical sampling in a multiple quantum well saturable absorber [PDF]

, 2008
The use of multiple-quantum-well saturable absorbers in all optical sampling of high repetition rate pulse trains is presented.
Reid, Douglas A., Simon, Jean Claude, Barry, Liam P., Joindot, M., Bramerie, Laurent, Lobo, S., Le, Q.T., Gay, M., Maguire, Paul J., Barry, Liam,, Joindot, Michel, L. Bramerie, Q.T. Le, Le, Quang Trung, J.C. Simon, Aubin, Guy, Maguire, Paul,, M. Joindot, L.P. Barry, M. Gay, J.-L. Oudar, Maguire, Paul, J., Lobo, Sebastien, Oudar, Jean-Louis, Reid, Douglas,, P.J. Maguire, G. Aubin, Massoubre, David, D.A. Reid, Simon, Jean-Claude, Reid, Douglas, A., Barry, Liam, P., S. Lobo, Gay, Mathilde, D. Massoubre   +34 more
core   +2 more sources

Observation of Reverse Saturable Absorption of an X-ray Laser [PDF]

, 2017
A nonlinear absorber in which the excited state absorption is larger than the ground state can undergo a process called reverse saturable absorption. It is a well-known phenomenon in laser physics in the optical regime, but is more difficult to generate ...
Heimann, P.A., Vinko, S.M., Turner, J.J., M. S. Cho, Vinko, S. M., J. Chalupský, Rackstraw, D. S., Kim, M., R.W. Lee, Holmes, M., Chung, H.-K., L. Juha, D. S. Rackstraw, V. Hájková, Rackstraw, D.S., Nam, Chang Hee, G. L. Dakovski, Cho, Byeoung Ick, Heimann, P. A., S. M. Vinko, Lee, R. W., P. A. Heimann, Cho, B. I., Wark, J. S., Zastrau, U., Krzywinski, J., Chalupský, J., J. Krzywinski, B. Barbrel, O. Ciricosta, U. Zastrau, Chang Hee Nam, Ciricosta, O., B. I. Cho, Cho, M.S., Lee, R.W., Juha, L., S. Toleikis, Turner, J. J., Toleikis, S., Barbrel, B., Cho, M. S., R. W. Lee, Engelhorn, K., K. Engelhorn, Wark, J.S., T. Burian, M. Holmes, H.-K. Chung, J. J. Turner, Dakovski, G.L., M. Kim, Dakovski, G. L., Hájková, V., Burian, T., J. S. Wark   +55 more
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Reverse saturable absorption in solid xerogel matrices

, 1993
International audienceAluminophthalocyanine (APC) and fullerene carbon 60 (C,) have been studied encaged in different silica matrices. The reverse saturable absorption properties of these doped xerogels have been compared to those of reference solutions ...
Laurent Malier, Canva, Michael, Frédéric Chaput, Bentivegna, Florian, Georges, Patrick, Michael Canva, Jean-Pierre Boilot, Boilot, Jean-Pierre, Malier, Laurent, Alain Brun, Florian Bentivegna, Brun, Alain, Patrick Georges, Chaput, Frédéric   +13 more
core   +1 more source

Nonlinear optical absorption and optical limiting of olive oil by using Z-scan technique [PDF]

JES: Journal of Engineering Sciences
Olive oil is classified as an organic chemical that possesses intriguing nonlinear optical characteristics. As a result, it is an appealing option for usage in photonic applications.
Abeer Salah, Ahmed Saad, Gamal Afifi
doaj   +1 more source

Phosphorescence Studies of Reverse Saturable Absorption Materials

, 1999
Phosphorescence studies of reverse saturable absorption materials (RSA) are discussed. Absorption and emission measurements of an RSA material, specifically Zinc 2,3,7,8,12,13,17,18-octabromo-5,10,15,20-tetraphenylporphyrin (ZnOBP), are performed in a ...
C. M. Clark, S. M. Kirkpatrick, E. S. Pooler   +2 more
core   +1 more source

Nonlinear optical effects related to saturable and reverse saturable absorption by subphthalocyanines at 532 nm

, 2005
It is found that both effects of saturable absorption and reverse saturable absorption are obtained with a solution of subphthalocyanine 2 at 532 nm depending on the intensity of 9 ns laser pulses; saturable absorption occurs at lower intensity levels
DINI D, HANACK M, AMENDOLA, VINCENZO, DINI, DANILO, VAGIN S, MENEGHETTI, MORENO, Vincenzo Amendola, Sergej Vagin, Michael Hanack, Moreno Meneghetti   +9 more
core   +1 more source

Nonlinear optical trapping effect with reverse saturable absorption

, 2023
Nonlinear responses of nanoparticles induce enlightening phenomena in optical tweezers. With the gradual increase in optical intensity, effects from saturable absorption (SA) and reverse SA (RSA) arise in sequence and thereby modulate the nonlinear ...
Zhang, Shuoshuo (author), Zhang, Y. (author), Zhu, Z. (author), Min, Changjun (author), Yuan, Xiaocong (author), Urbach, Paul (author), Adam, A.J.L. (author)   +6 more
core   +1 more source

Optical limiting via spontaneously generated coherence

Scientific Reports, 2023
We investigate the reverse saturable absorption (RSA) and optical limiting (OL) in a three-level V-type quantum system considering the effect of the spontaneously generated coherence (SGC). It is shown that in the absence of the SGC effect, the saturable
Abbas Silatan, Mohsen Ghaderi GoranAbad, Mohammad Mahmoudi   +2 more
doaj   +1 more source

Nonlinear Optical Characterization of InP@ZnS Core-Shell Colloidal Quantum Dots Using 532 nm, 10 ns Pulses

Nanomaterials, 2021
InP@ZnS core-shell colloidal quantum dots (CQDs) were synthesized and characterized using the z-scan technique. The nonlinear refraction and nonlinear absorption coefficients (γ = −2 × 10−12 cm2 W−1, β = 4 × 10−8 cm W−1) of these CQDs were determined ...
Rashid A. Ganeev, Andrey I. Zvyagin, Ivan A. Shuklov, Maksim G. Spirin, Oleg V. Ovchinnikov, Vladimir F. Razumov   +5 more
doaj   +1 more source