Results 151 to 160 of about 62,745 (215)

Substituent Effects on Cyanine Dyes Vary with Position and Chain Length

Advanced Optical Materials, EarlyView.
In cyanines, substituent effects vary as a function of substituent position and cyanine length. Electron‐donating‐ and ‐withdrawing groups at meso‐ and α‐positions of 4n+1/4n−1 long cyanines (n = 1, 2, 3…) cause opposing, hypsochromic and bathochromic shifts of the 1st UV–vis absorption bands.
David Dunlop, Rebecca Strada, Peter Šebej   +2 more
wiley   +1 more source

Single-beam femtosecond Z-scan studies of bismuth and manganese co-doped titanium dioxide nanoparticles dispersed in ethanol. [PDF]

RSC Adv
Podagatlapalli GK, Jena T, Maddila S, Hamad S, Vadavalli S, Angani C, Soma VR.   +6 more
europepmc   +1 more source

Cross‐Phase Modulation via Time‐Varying Epsilon‐Near‐Zero Metasurfaces

Advanced Optical Materials, EarlyView.
Time‐varying epsilon‐near‐zero metasurfaces are shown to enable cross‐phase modulation beyond conventional ENZ excitation. By engineering dual absorption bands and exploiting oblique ultrafast pumping, large and broadband frequency translations are achieved at low pump energies.
Rakesh Dhama, Md Imran Hossain, Jesse Pietila, Thomas Fordell, Humeyra Caglayan   +4 more
wiley   +1 more source

Extreme optical nonlinearities unveiled by ultrafast laser filamentation in semiconductors. [PDF]

Nat Commun
Chambonneau M, Blothe M, Fedorov VY, de Kernier I, Tzortzakis S, Nolte S.   +5 more
europepmc   +1 more source

Nonlinear Absorption Response Correlated to Embedded Ag Nanoparticles in BGO Single Crystal: From Two-Photon to Three-Photon Absorption. [PDF]

Sci Rep, 2018
Li R, Dong N, Ren F, Amekura H, Wang J, Chen F.   +5 more
europepmc   +1 more source

Spectral Selectivity Enhancement in Solar Absorber Multilayers through Titanium Oxynitride Thin Film Modulation

Advanced Optical Materials, EarlyView.
Optical and plasmonic properties of TiN and Ti(O)N thin films were tuned at the synthesis stage by modulating the oxygen pressure during room‐temperature pulsed laser deposition. Ti(O)N thin films exhibiting a highly metallic and peculiar double‐epsilon‐near‐zero (DENZ) behavior were produced.
Claudia P. Hallqvist, Cristina Mancarella, Marco Agozzino, Salvatore Lucchese, Luca Mascaretti, Ivan Richter, Alessio Lamperti, Demosthenes C. Koutsogeorgis, Nikolaos Kalfagiannis, Andrea Li Bassi   +9 more
wiley   +1 more source

Absorption, dispersion, and emission characteristics of novel Chitosan blends thin films tuned by UV-Ozone. [PDF]

Sci Rep
Gaml EA, Abusnina H, El-Ghamaz NA.
europepmc   +1 more source

Material Modification of Borofloat 33 During Scanning‐Based Microforming Using Femtosecond Laser Pulses

Advanced Optical Materials, EarlyView.
Possibilities for ablation‐free microforming of borosilicate glass using ultrashort laser pulses are presented. Depending on the laser parameters and scanning strategy, surface structures with profile heights of up to 20 µm could be produced. The work provides a comprehensive experimental and analytical characterization of the microforming process ...
Marina Skiba, Hagen Peter Kohl, Eric Schadow, Stefan Nolte, Andrés Fabián Lasagni, Jens Bliedtner   +5 more
wiley   +1 more source

Femto-joule threshold reconfigurable all-optical nonlinear activators for picosecond pulsed optical neural networks. [PDF]

Light Sci Appl
Liu R, Wang Z, Zhong C, Chen Y, Sun B, Jian J, Ma H, Gao D, Yang J, Li L, Liu K, Hu X, Lin H.   +12 more
europepmc   +1 more source

Experimental Evidence of Free Carrier Generation in 2D Hybrid Organic–Inorganic Perovskites

Advanced Optical Materials, EarlyView.
ABSTRACT Despite the significant potential of 2D hybrid organic–inorganic perovskites (2DHOIPs) for high‐efficiency optoelectronics application‐comparable to their 3D counterparts, the fundamental carrier photogeneration remains unclear. In contrast to conventional ultrafast optical property characterization, we use ultrafast photocurrent spectroscopy ...
Tuhin Ghosh, Pan Adhikari, Yao Gao, Apparao M. Rao, Dawen Li, Haimei Zheng, Ying Shi, Letian Dou, Jianbo Gao   +8 more
wiley   +1 more source