Results 191 to 200 of about 12,890 (241)
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2016
As comprehensively described in the earlier chapters of this book, by 1970, Alfano and Shapiro had published three defining papers on supercontinuum generation in bulk materials (Alfano and Shapiro, 1970a,b,c), identifying some of the principal non-linear effects contributing to the observed spectral broadening, as well as recognising the importance of
J. C. Travers, J. R. Taylor
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As comprehensively described in the earlier chapters of this book, by 1970, Alfano and Shapiro had published three defining papers on supercontinuum generation in bulk materials (Alfano and Shapiro, 1970a,b,c), identifying some of the principal non-linear effects contributing to the observed spectral broadening, as well as recognising the importance of
J. C. Travers, J. R. Taylor
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Coherent-mode representation of supercontinuum
Optics Letters, 2012We apply the coherent-mode expansion to correlation functions used to describe the coherence properties of supercontinuum generated in nonlinear fibers. We show that the leading term of the expansion represents the quasi-coherent part of the field while the quasi-stationary part is embedded into the higher-order modes.
Friberg Ari +4 more
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Visible cw-pumped supercontinuum
Optics Letters, 2008We report the experimental demonstration of a visible supercontinuum in the cw pumping regime. A 20 W ytterbium fiber laser at 1.06 microm is used to pump a photonic crystal fiber whose zero-dispersion wavelength decreases along the fiber length. Visible wavelengths are generated in the fundamental mode via trapping of dispersive waves by redshifted ...
Alexandre, Kudlinski, Arnaud, Mussot
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Supercontinuum generation in tapered fibers
Optics Letters, 2000Supercontinuum light with a spectrum more than two octaves broad (370-1545 nm at the 20-dB level) was generated in a standard telecommunications fiber by femtosecond pulses from an unamplified Ti:sapphire laser. The fiber had been tapered to a diameter of :2mum over a 90-mm length. The pulse energy was 3.9 nJ (average power, 300 mW).
T A, Birks, W J, Wadsworth, P S, Russell
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Thermal focusing effects on the supercontinuum
Applied Optics, 1988Etude de la phase de l'impulsion, de la forme spectrale du supercontinuum et du diametre du faisceau en presence des gradients de ...
J T, Manassah, P L, Baldeck, R R, Alfano
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Coherence Properties of the Supercontinuum Source
Applied Physics B, 2003Mutual–temporal coherence of the supercontinuum (SC) generation has been experimentally investigated using a diffraction grating based interferometer. A broadband SC generation was produced in a pyrex glass plate with a 1.6-μm coherence length at 550-nm center wavelength.
I. Zeylikovich, R. R. Alfano
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The rising of the supercontinuum
Conference on Lasers and Electro-Optics, 2016Supercontinuum sources are one of the most widely exploited technologies to emerge from the invention of photonic crystal fibers. I will review the developments in supercontinuum technology which have allowed this exploitation to take place.
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Supercontinuum Generation in Water
12th International Conference on Fiber Optics and Photonics, 2014We report efficient generation of a broadband supercontinuum (SC) in water and aqueous gold colloids upon irradiation by intense, near-infrared, femtosecond laser pulses. The SC spectra are rationalized within the framework of a phenomenological self-phase modulation model.
Parinda Vasa +6 more
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Towards a thermodynamic description of supercontinuum generation
2009 IEEE/LEOS Winter Topicals Meeting Series, 2008We consider the incoherent nonlinear regime of the supercontinuum generation process in optical fibers. We show that, under certain conditions, the phenomenon of spectral broadening inherent to the supercontinuum generation may be described by simple thermodynamic arguments based on the kinetic wave theory.
Barviau, Benoît +3 more
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SPIE Proceedings, 2009
Airy beams are of great interest as a result of their unusual characteristics, they are non-diffracting and also propagate along a parabolic path due to the presence of a transversal acceleration component. In this paper the generation of a white light Airy beam is presented, an investigation is also carried out to determine how the properties of an
Jill E. Morris +4 more
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Airy beams are of great interest as a result of their unusual characteristics, they are non-diffracting and also propagate along a parabolic path due to the presence of a transversal acceleration component. In this paper the generation of a white light Airy beam is presented, an investigation is also carried out to determine how the properties of an
Jill E. Morris +4 more
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