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  Optical nano-structuring in light-sensitive AgCl-Ag waveguide thin films: wavelength effect

Talebi, R., Nahal, A., Bashouti, M. Y., & Christiansen, S. H. (2014). Optical nano-structuring in light-sensitive AgCl-Ag waveguide thin films: wavelength effect. OPTICS EXPRESS, 22(25), 30669-30682. doi:10.1364/OE.22.030669.

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Talebi, Razieh1, Autor
Nahal, Arashmid1, Autor
Bashouti, Muhammad Y.2, Autor           
Christiansen, Silke H.2, 3, Autor           
Affiliations:
1external, ou_persistent22              
2Micro- & Nanostructuring, Technology Development and Service Units, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364725              
3Christiansen Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364716              

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Schlagwörter: SPONTANEOUS GRATING FORMATION; SILVER NANOPARTICLES; PHOTOSENSITIVE FILMS; METAL NANOPARTICLES; SIZE; ABSORPTION; GYROTROPYOptics;
 Zusammenfassung: Irradiation of photosensitive thin films results in the nanostructures formation in the interaction area. Here, we investigate how the formation of nanostructures in photosensitive waveguide AgCl thin films, doped by Ag nanoparticles, can be customized by tuning the wavelength of the incident beam. We found, silver nanoparticles are pushed towards the interference pattern minima created by the interference of the incident beam with the excited TEn-modes of the AgCl-Ag waveguide. The interference pattern determines the grating constant of the resulting spontaneous periodic nanostructures. Also, our studies indicate a strong dependence of the shape and size distribution of the formed Ag nanocoalescences on the wavelength of the incident beam. It also influences on the surface coverage of the sample by the formed silver nanoparticles and on period of the self-organized nano-gratings. It is found, exposure time and intensity of the incident light are the most determinant parameters for the quality and finesse of our nanostructures. More intense incident light with shorter exposure time generates more regular nanostructures with smaller nano-coalescences and, produces gratings with higher diffraction efficiency. At constant intensity longer exposure time produces more complete nanostructures because of optical positive feedback. We observed exposure with longer wavelength produces finer gratings. (C)2014 Optical Society of America

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Sprache(n): eng - English
 Datum: 2014
 Publikationsstatus: Erschienen
 Seiten: 14
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: ISI: 000346368800059
DOI: 10.1364/OE.22.030669
 Art des Abschluß: -

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Titel: OPTICS EXPRESS
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA : OPTICAL SOC AMER
Seiten: - Band / Heft: 22 (25) Artikelnummer: - Start- / Endseite: 30669 - 30682 Identifikator: ISSN: 1094-4087