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  Free space excitation of coupled Anderson-localized modes in photonic crystal waveguides with polarization tailored beam

Mahdavi, A., Roth, P., Xavier, J., Paraiso, T. K., Banzer, P., & Vollmer, F. (2017). Free space excitation of coupled Anderson-localized modes in photonic crystal waveguides with polarization tailored beam. APPLIED PHYSICS LETTERS, 110(24): 241101. doi:10.1063/1.4986187.

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Datensatz-Permalink: https://hdl.handle.net/21.11116/0000-0000-858A-E Versions-Permalink: https://hdl.handle.net/21.11116/0000-0000-858B-D
Genre: Zeitschriftenartikel

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 Urheber:
Mahdavi, Ali1, Autor           
Roth, Paul2, Autor           
Xavier, Jolly1, 3, Autor           
Paraiso, Taofiq K.4, 5, Autor           
Banzer, Peter6, Autor           
Vollmer, Frank1, 3, Autor           
Affiliations:
1Vollmer Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364719              
2Russell Division, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364721              
3University of Exeter, Living Syst Inst, Dept Phys & Astron, Exeter EX4 4QD, Devon, England, ou_persistent22              
4Painter Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364717              
5Toshiba Res Europe Ltd, 208 Cambridge Sci Pk, Cambridge CB4 0GZ, England, ou_persistent22              
6Interference Microscopy and Nanooptics, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364700              

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Schlagwörter: SLOW-LIGHT; IMPERFECTIONS; SCATTERING; ROUGHNESSPhysics;
 Zusammenfassung: We experimentally demonstrate free space excitation of coupled Anderson-localized modes in photonic crystal (PhC) line-defect waveguides (W1) with polarization tailored beams. The corresponding light beam is tightly focused on a pristine W1, and out-of-plane scattering is imaged. By integrating the scattering spectra along the guide, at the W1 modal cut-off, Anderson-localized cavities are observed due to residual W1 fabrication-disorder. Their spectral lines exhibit high quality Q factors up to 2 x 10(5). The incident beam polarization and scattering intensities of the localized modes characterize the efficiency of free-space coupling. The coupling is studied for linearly and radially polarized input beams and for different input coupling locations along the W1 guide. The proposed coupling scheme is particularly attractive for excitation of PhC waveguide modes and Anderson-localized cavities by beam steering and scanning microscopy for sensing applications. Published by AIP Publishing.

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Sprache(n): eng - English
 Datum: 2017
 Publikationsstatus: Online veröffentlicht
 Seiten: 5
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: ISI: 000403678300001
DOI: 10.1063/1.4986187
 Art des Abschluß: -

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Titel: APPLIED PHYSICS LETTERS
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA : AMER INST PHYSICS
Seiten: - Band / Heft: 110 (24) Artikelnummer: 241101 Start- / Endseite: - Identifikator: ISSN: 0003-6951