Experimental generation of high-contrast Talbot images with an ultrashort laser pulse
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Otros documentos de la autoría: Mínguez-Vega, Gladys; Mendoza-Yero, Omel; Fernández Alonso, Mercedes; Andrés, Pedro; Climent, Vicent; Lancis, Jesús
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
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http://dx.doi.org/10.1016/j.optcom.2007.09.058 |
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Título
Experimental generation of high-contrast Talbot images with an ultrashort laser pulseAutoría
Fecha de publicación
2008Editor
ElsevierISSN
304018Cita bibliográfica
Optics Communications, 281, 3, p. 374-379Tipo de documento
info:eu-repo/semantics/articleVersión
info:eu-repo/semantics/publishedVersionResumen
A femtosecond Ti:sapphire laser oscillator emitting pulses with 800 nm central wavelength, 10.9 fs pulse width, and 75 MHz repetition rate, combined with a dispersion-compensated diffractive system, was used to implement ... [+]
A femtosecond Ti:sapphire laser oscillator emitting pulses with 800 nm central wavelength, 10.9 fs pulse width, and 75 MHz repetition rate, combined with a dispersion-compensated diffractive system, was used to implement a large-area, high-contrast, broadband optical interference technique based on the Talbot effect. Chromatic artifacts associated with the huge spectrum of the optical source (approximately 150 nm) are compensated for with an air-separated hybrid diffractive-refractive lens doublet. The spatial resolution of the chromatically compensated Talbot images under femtosecond illumination is nearly identical to that achieved under continuous wave monochromatic illumination. Furthermore, the temporal width of the signal at the Talbot planes is limited by the group-delay-dispersion coefficient which is shown to be small. High-contrast one-dimensional periodic structures of 96.1 μm spacing generated by Talbot diffractometry are experimentally demonstrated. © 2007 Elsevier B.V. All rights reserved. [-]
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