Título:
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Multidimensional subwavelength position sensing using a semiconductor laser with optical feedback
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Autor/a:
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Cohen, Seth; Aragoneses Aguado, Andrés; Rontani, Damien; Torrent Serra, Maria del Carmen; Masoller Alonso, Cristina; Gauthier, Daniel
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Otros autores:
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Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear; Universitat Politècnica de Catalunya. DONLL - Dinàmica no Lineal, Òptica no Lineal i Làsers |
Abstract:
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We demonstrate experimentally how to harness quasi-periodic dynamics in a semiconductor laser with dual optical feedback for measuring subwavelength changes in each arm of the cavity simultaneously. We exploit
the multifrequency spectrum of quasi-periodic dynamics and show that independent frequency shifts are mapped uniquely to two-dimensional displacements of the arms in the external cavity. Considering a laser diode operating at telecommunication wavelength λ≈1550nm, we achieve an average nanoscale resolution of approximately 9.8 nm
(∼λ∕160). |
Abstract:
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Peer Reviewed |
Materia(s):
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-Àrees temàtiques de la UPC::Física::Física de l'estat sòlid::Semiconductors -Semiconductor laser -Optical detectors -Laser sensors -Semiconductor lasers -Làsers de semiconductors -Detectors òptics |
Derechos:
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Tipo de documento:
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Artículo - Versión publicada Artículo |
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