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8 papers · 2 filters
Surface domain engineering in congruent lithium niobate single crystals: A route to submicron periodic poling
Alessandro C. Busacca, Collin L. Sones, Vasilis Apostolopoulos +2
We describe a technique for surface domain engineering in congruent lithium niobate single crystals. The method is based on conventional electric-field poling, but involves an inte…
Resonance linewidth and inhomogeneous broadening in a metamaterial array
Stewart D. Jenkins, Janne Ruostekoski
We examine the effect of inhomogeneous broadening on the collective response of a planar metamaterial consisting of asymmetric split ring resonators. We show that such a response l…
First-order quasi-phase-matched blue light generation in surface-poled Ti:indiffused lithium niobate waveguides
Alessandro C. Busacca, Collin L. Sones, Robert W. Eason +1
We demonstrate efficient first-order quasi-phase-matched second-harmonic generation in a surface periodically poled Ti:indiffused lithium niobate waveguide; 6 mW of continuous-wave…
Thulium-doped silica fibers with enhanced 3H4 level lifetime: modelling the devices for 800-820 nm band
Pavel Peterka, Ivan Kasik, Anirban Dhar +2
Silica-based thulium-doped fiber devices operating around 810 nm would extend the spectral range covered by high- power fiber devices. Using a comprehensive numerical model of the…
Visible luminescence from hydrogenated amorphous silicon modified by femtosecond laser radiation
Andrey V. Emelyanov, Andrey G. Kazanskii, Mark V. Khenkin +5
Visible luminescence is observed from the composite of SiO2 with embedded silicon nanocrystallites produced by femtosecond laser irradiation of hydrogenated amorphous silicon (a-Si…
Theoretical formalism for collective electromagnetic response of discrete metamaterial systems
Stewart D. Jenkins, Janne Ruostekoski
We develop a general formalism to describe the propagation of a near-resonant electromagnetic field in a medium composed of magnetodielectric resonators. As the size and the spatia…