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Midinfrared absorption measured at a lambda/400 resolution with an atomic force microscope.
Opt Express ; 17(13): 10887-94, 2009 Jun 22.
Artigo em Inglês | MEDLINE | ID: mdl-19550489
ABSTRACT
Midinfrared absorption can be locally measured using a detection combining an atomic force microscope and a pulsed excitation. This is illustrated for the midinfrared bulk GaAs phonon absorption and for the midinfrared absorption of thin SiO(2) microdisks. We show that the signal given by the cantilever oscillation amplitude of the atomic force microscope follows the spectral dependence of the bulk material absorption. The absorption spatial resolution achieved with microdisks is around 50 nanometer for an optical excitation around 22 micrometer wavelength.
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Coleções: Bases de dados internacionais Base de dados: MEDLINE Assunto principal: Espectrofotometria Infravermelho / Microscopia de Força Atômica Idioma: Inglês Revista: Opt Express Assunto da revista: Oftalmologia Ano de publicação: 2009 Tipo de documento: Artigo País de afiliação: França