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Article
Optical parametric amplification in all-silica triangular-core photonic crystal fibers
The present analysis demonstrates that photonic crystal fibers can be designed to enhance their properties for optical parametric amplification. In particular, it is possible to achieve high nonlinear coeffici...
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Article
Electromagnetic field confined and tailored with a few air holes in a photonic-crystal fiber
Conventional and scanning near-field optical microscopy techniques are cross referenced to femtosecond nonlinear-optical measurements and finite-element numerical simulations to visualize and analyze a strong ...
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Article
Specificity and total positive rate of head- up tilt testing potentiated with sublingual nitroglycerin in older patients with unexplained syncope
The aim of this study was to assess the specificity and total positive rate of head- up tilt testing (HUTT) potentiated with sublingual nitroglycerin in detecting the vasovagal origin of unexplained syncope in...