Results 71 to 80 of about 143,644 (298)

Nonlinear interferometer for tailoring the frequency spectrum of bright squeezed vacuum

, 2015
We propose a method for tailoring the frequency spectrum of bright squeezed vacuum by generating it in a nonlinear interferometer, consisting of two down-converting nonlinear crystals separated by a dispersive medium. Due to a faster dispersive spreading
Boyd, R. W., Chekhova, M., Iskhakov, T. Sh., Lemieux, S., Leuchs, G., Perez, A.   +5 more
core   +1 more source

Gap solitons in spatiotemporal photonic crystals [PDF]

, 2007
We generalize the concept of nonlinear periodic structures to systems that show arbitrary spacetime variations of the refractive index. Nonlinear pulse propagation through these spatiotemporal photonic crystals can be described, for shallow nonstationary
Andreas Amann, Eoin P. O’Reilly, F. Benabid, F. R. Morgenthaler, Fabio Biancalana, J. D. Jackson, R. E. Slusher   +6 more
core   +3 more sources

Predicting Atomic Charges in MOFs by Topological Charge Equilibration

Advanced Functional Materials, EarlyView.
An atomic charge prediction method is presented that is able to accurately reproduce ab‐initio‐derived reference charges for a large number of metal–organic frameworks. Based on a topological charge equilibration scheme, static charges that fulfill overall neutrality are quickly generated.
Babak Farhadi Jahromi, Sumukh Shankar Sharadaprasad, Rochus Schmid   +2 more
wiley   +1 more source

Spectroscopy of Yb3+-doped multicomponent alkaline earth metal fluorides for ultrafast lasers [PDF]

EPJ Web of Conferences
The optical spectroscopy of an ytterbium-doped multicomponent alkaline earth metal fluoride crystal Yb3+,Y3+:(Ca,Sr)F2 was studied with the goal of developing novel gain media for ultrafast mode-locked oscillators.
Normani Simone, Loiko Pavel, Zhang Zhen, Ma Fengkai, Jiang Dapeng, Su Liangbi, Braud Alain, Petrov Valentin, Chen Weidong   +8 more
doaj   +1 more source

Space-Selective Control of Functional Crystals by Femtosecond Laser: A Comparison between SrO-TiO₂-SiO₂ and Li₂O-Nb₂O₅-SiO₂ Glasses

Crystals, 2020
We report on space-selective crystallization of congruent and polar Sr2TiSi2O8 crystals in a stoichiometric SrO-TiO2-SiO2 glass induced by (1030 nm, 300 fs) femtosecond laser irradiation.
Xuan He, Qiming Liu, Matthieu Lancry, François Brisset, Bertrand Poumellec   +4 more
doaj   +1 more source

Dynamical localization of gap-solitons by time periodic forces

, 2009
The phenomenon of dynamical localization of matter wave solitons in optical lattices is first demonstrated and the conditions for its existence are discussed.
Bludov, Yu. V., Konotop, V. V., Salerno, M.   +2 more
core   +1 more source

Parametric Solitons in Nonlinear Photonic Crystals [PDF]

LEOS 2007 - IEEE Lasers and Electro-Optics Society Annual Meeting Conference Proceedings, 2007
We present theoretical and experimental investigations on the soliton dynamics associated to multiple second harmonic generation resonances in two-dimensional nonlinear photonic crystals, highlighting a wealth of new possibilities for soliton management in such structures.
Gallo, K., Stivala, S., Pasquazi, A., Assanto, G.   +3 more
openaire   +2 more sources

Shaping Ti3C2 MXene Nanospheres for Precision Near‐Infrared Photothermal Therapy

Advanced Functional Materials, EarlyView.
In this study, we report producing spherical MXenes via fs laser fragmentation of Ti3C2 flakes in liquid medium. The nanoparticles demonstrated pronounced light absorption and high photothermal conversion efficiencies of 68% and 63% under heating with NIR‐I and NIR‐II lasers, respectively.
Julia S. Babkova, Ivan V. Zelepukin, Konstantin G. Shevchenko, Gleb V. Tikhonowski, Lyubov V. Gorelik, Anton A. Popov, Anna S. Sogomonyan, Alina Yu. Kapitannikova, Ivan S. Kazantsev, Dmitry V. Dyubo, Daria A. Panova, Daniil I. Tselikov, Anton A. Minnekhanov, Aziz B. Mirkasymov, Georgy A. Ermolaev, Alexander V. Syuy, Gleb I. Tselikov, Aleksey V. Arsenin, Andrei V. Kabashin, Kostya S. Novoselov, Sergey M. Deyev, Valentyn S. Volkov   +21 more
wiley   +1 more source

INVESTIGATION ON GROWTH AND CHARACTERIZATION OF NONLINEAR OPTICAL DICHLORO-DIGLYCINE ZINC II SINGLE CRYSTAL

Iranian Journal of Materials Science and Engineering, 2016
The study of amino acid based nonlinear optical (NLO) materials with optimum physical properties is an important area due to their practical applications such as optical communication, optical computing, optical information processing, optical disk data ...
S. Sagadevan, N. Nithya, R. Mahalakshmi
doaj  

Photoconduction and photocontrolled collective effects in the Peierls conductor TaS$_3$

, 2004
Light illumination of thin crystals of CDW conductor TaS$_3$ is found to result in dramatic changes of both linear ($G$) and nonlinear conduction. The increase of $G$ is accompanied by suppression of the collective conduction, growth of the threshold ...
Minakova, V. E., Zaitsev-Zotov, S. V.
core   +1 more source