Ultraviolet optical near-fields of microspheres imprinted in phase change films | Zendy

Jan Siegel | Zendy; Daniel Puerto | Zendy; J. Solı́s | Zendy; F. Javier Garcı́a de Abajo | Zendy; C. N. Afonso | Zendy; Massimo Longo | Zendy; C. Wiemer | Zendy; M. Fanciulli | Zendy; Paul Kühler | Zendy; M. Mosbacher | Zendy; P. Leǐderer | Zendy

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Ultraviolet optical near-fields of microspheres imprinted in phase change films

Author(s) -

Jan Siegel,

Daniel Puerto,

J. Solı́s,

F. Javier Garcı́a de Abajo,

C. N. Afonso,

Massimo Longo,

C. Wiemer,

M. Fanciulli,

Paul Kühler,

M. Mosbacher,

P. Leǐderer

Publication year - 2010

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3428582

Subject(s) - femtosecond , materials science , ultraviolet , nanosecond , optics , laser , optoelectronics , scanning electron microscope , dielectric , phase (matter) , chemistry , physics , organic chemistry

We report an experimental method for directly imaging optical near-fields of dielectric microspheres upon illumination with ultraviolet nanosecond laser pulses. The intensity distribution is imprinted in chalcogenide films leaving behind a characteristic fingerprint with features below 200 nm in size, which we read out with high-resolution field emission scanning electron microscopy. The experimental results are well matched by a rigorous solution of Maxwell's equations. Compared to previous works using infrared femtosecond laser pulses, the use of ultraviolet nanosecond pulses is identified to be superior in terms of minimum recordable features size and surface roughness of the imprint. © 2010 American Institute of Physics.Peer Reviewe

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