Results 61 to 70 of about 379,398 (143)

Optical limiting behavior of bismuth oxide-based glass in the visible range [PDF]

, 2006
The authors report experimental results on the optical limiting behavior of a bismuth oxide-based glass by exciting the samples with nanosecond laser pulses at 532 and 598 nm.
A. S. L. Gomes, Cid B. de Araújo, E. L. Falcão-Filho, F. P. Mezzapesa, Hernández F., I. C. S. Carvalho, K. Sakaguchi, L. de S. Menezes, P. G. Kazansky, T. R. Oliveira   +9 more
core   +1 more source

Synthesis, as well as linear and nonlinear fluorescence properties of 5, 5’-bis(4-N-carbazolylstyryl)-2, 2’-bithiophene [PDF]

Journal of the Serbian Chemical Society, 2004
Anew bithiophene-based organic luminescence material, named 5,5’-bis(4-N-carbazoylstyryl)- 2,2’-bithiophene (BCSBT), was synthesized. Its single-photon excited fluorescence band is located in the range of 520–530 nm, with a quantum yield of around 10 ...
Xia Guang-Ming, Lu Ping, Xu Gui-Bao
doaj   +1 more source

Optically tailored access to metastable electronic states [PDF]

, 2013
On irradiating a molecular system with a laser beam of ultraviolet or visible frequency, photon absorption occurs when an electronic state is at a suitable energy level relative to an initial state.
Andraud, Andrews, Andrews, Andrews, Bancewicz, Bradshaw, Bradshaw, Bradshaw, Brasselet, Coope, Coope, Craig, David L. Andrews, David S. Bradshaw, Jerphagnon, Jerphagnon, Leeder, Mandel, Piron, Salam, Smith, Stone, Stone   +22 more
core   +1 more source

Fluorescent phosphorus dendrimers excited by two photons: synthesis, two-photon absorption properties and biological uses

Beilstein Journal of Organic Chemistry, 2019
Different types of two-photon absorbing (TPA) fluorophores have been synthesized and specifically functionalized to be incorporated in the structure of phosphorus dendrimers (highly branched macromolecules).
Anne-Marie Caminade, Artem Zibarov, Eduardo Cueto Diaz, Aurélien Hameau, Maxime Klausen, Kathleen Moineau-Chane Ching, Jean-Pierre Majoral, Jean-Baptiste Verlhac, Olivier Mongin, Mireille Blanchard-Desce   +9 more
doaj   +1 more source

Two-photon absorption in potassium niobate

, 2001
We report measurements of thermal self-locking of a Fabry-Perot cavity containing a potassium niobate (KNbO3) crystal. We develop a method to determine linear and nonlinear optical absorption coefficients in intracavity crystals by detailed analysis of ...
A. D. Ludlow, An, Arie, Busse, Douillet, Drever, Dube, Ghosh, Goldberg, H. M. Nelson, Mabuchi, Polzik, S. D. Bergeson, Shiv   +13 more
core   +1 more source

Experimental verification of a self-consistent theory of the first-, second-, and third-order (non)linear optical response

, 2009
We show that a combination of linear absorption spectroscopy, hyper-Rayleigh scattering, and a theoretical analysis using sum rules to reduce the size of the parameter space leads to a prediction of the two-photon absorption cross-section of the dye ...
F. A. Cotton, Javier Pérez-Moreno, Juefei Zhou, Koen Clays, M. G. Kuzyk, Mark G. Kuzyk, Sheng-Ting Hung, Shiva K. Ramini, W. Heisenberg, W. Kuhn   +9 more
core   +1 more source

Nonlinear Effects in Multi-Photon Polaritonics

, 2013
We consider theoretically nonlinear effects in a semiconductor quantum well embedded inside a photonic microcavity. Two-photon absorption by a 2p exciton state is considered and investigated; the matrix element of two-photon absorption is calculated.
Kovalev, V. M., Liew, T. C. H., Pervishko, A. A., Savenko, I. G., Shelykh, I. A.   +4 more
core   +1 more source

Two-photon absorption study with coupled mode formalism

JPhys Photonics
Optical limiting devices employ two photon absorption (TPA) in materials for sensor and eye protection. To be able to reduce the intensity threshold for protection, cavity structures can be considered.
Naman Gupta, Sudarshan Das, Srini Krishnamurthy, Sivarama Krishnan, Rituraj   +4 more
doaj   +1 more source

Eigenstates of a Small Josephson Junction Coupled to a Resonant Cavity

, 2001
We carry out a quantum-mechanical analysis of a small Josephson junction coupled to a single-mode resonant cavity. We find that the eigenstates of the combined junction-cavity system are strongly entangled only when the gate voltage applied at one of the
A. B. Cawthorne, A. O. Caldeira, A. Shnirman, A. Steane, C. H. van der Wal, D. Stroud, E. Almaas, G. Filatrella, J. E. Mooij, J. H. Eberly, J. K. Harbaugh, J. R. Friedman, L. A. Lugiato, M. J. Everitt, M. V. Feigel’man, P. Barbara, R. Bonifacio, S. Chakravarty, S. Haroche, V. Ambegaokar, V. Bouchiat, W. A. Al-Saidi, Y. Nakamura, Y. Nakamura   +23 more
core   +1 more source

Optical nonlinearities of colloidal InP@ZnS core-shell quantum dots probed by Z-scan and two-photon excited emission

APL Materials, 2015
Spectrally resolved nonlinear optical properties of colloidal InP@ZnS core-shell quantum dots of various sizes were investigated with the Z-scan technique and two-photon fluorescence excitation method using a femtosecond laser system tunable in the range
Dominika Wawrzynczyk, Janusz Szeremeta, Marek Samoc, Marcin Nyk   +3 more
doaj   +1 more source