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Title

Deep subsurface waveguides with circular cross section produced by femtosecond laser writing

AuthorsDiez-Blanco, V.; Siegel, Jan ; Ferrer, Andrés; Ruiz de la Cruz, A.; Solís Céspedes, Javier
Issue Date2007
PublisherAmerican Institute of Physics
CitationApplied Physics Letters 91: 051104 (2007)
AbstractA combination of low numerical aperture focusing optics, in order to minimize spherical aberration, and beam shaping with a slit has been used to produce waveguides in fused silica by femtosecond laser writing. Waveguides with circular cross section and low losses are produced over a large depth window (>7 mm) without changing any experimental parameter. Diffraction induces beam divergence along the axis perpendicular to the slit, leading to a shift of the focal plane. The focal intensity distribution can be predicted by a hybrid model combining Gaussian beam propagation with imaging of the slit into the material. © 2007 American Institute of Physics.
URIhttp://hdl.handle.net/10261/61429
DOI10.1063/1.2761298
Identifiersdoi: 10.1063/1.2761298
issn: 0003-6951
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