Journal ArticleDOI
Visible continuum generation in air–silica microstructure optical fibers with anomalous dispersion at 800 nm
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TLDR
In this article, the authors demonstrate experimentally that air-silica microstructure optical fibers can exhibit anomalous dispersion at visible wavelengths, and exploit this feature to generate an optical continuum 550 THz in width, extending from the violet to the infrared.Abstract:
We demonstrate experimentally for what is to our knowledge the first time that air–silica microstructure optical fibers can exhibit anomalous dispersion at visible wavelengths. We exploit this feature to generate an optical continuum 550 THz in width, extending from the violet to the infrared, by propagating pulses of 100-fs duration and kilowatt peak powers through a microstructure fiber near the zero-dispersion wavelength.read more
Citations
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Journal ArticleDOI
Thermo-tunable hybrid photonic crystal fiber based on solution-processed chalcogenide glass nanolayers.
TL;DR: A tunable hybrid silica PCF with integrated As2S3 glass nanolayers inside the air-capillaries of the fiber based on a solution-processed glass approach is reported, which could potentially constitute an efficient route towards realization of monolithic tunable fiber filters or sensing elements.
Journal ArticleDOI
Advances in carrier-envelope phase stabilization of grating-based chirped-pulse amplifiers
TL;DR: In this article, the effects of laser pulse energy stability on the f-to-2f measurement of the carrier-envelope phase were found, with a 1% change in laser energy leading to 160 mrad phase error, showing the need for power-stable amplified laser systems.
Journal ArticleDOI
Visible Supercontinuum Generation in Holey Fibers by Dual-Wavelength Subnanosecond Pumping
TL;DR: In this paper, the experimental investigation of supercontinuum generation by propagating subnanosecond pulses at both 1064 and 532 nm in a nonlinear microstructured optical fiber is presented.
Journal ArticleDOI
Tunable supercontinuum generation in a high-index-step photonic-crystal fiber with a comma-shaped core
TL;DR: A fused silica high-index-step photonic-crystal fiber with a comma-shaped core is shown to upport two different types of guided modes with bell-shaped intensity profiles, efficiently transforming unamplified 30-fs Ti: sapphire laser pulses into supercontinuum emission through two different physical mechanisms.
Book ChapterDOI
Multidimensional Fluorescence Imaging Applied to Biological Tissue
Daniel S. Elson,Neil Galletly,Clifford Talbot,Jose Requejo-Isidro,James McGinty,Christopher Dunsby,Peter M. P. Lanigan,Ian Munro,Richard K.P. Benninger,Pieter A.A. De Beule,Eigidijus Auksorius,Laszlo Hegyi,Ann Sandison,Andrew L. Wallace,Pat Soutter,Mark A. A. Neil,John Lever,Gordon Stamp,Paul M. W. French +18 more
TL;DR: Fluorescence lifetime can provide intrinsic molecular contrast in unstained tissue and the prospects for in vivo application are exciting and the capability to excite fluorophores at almost any excitation wavelength and the opportunities to extract more information from fluorescence signals by resolving with respect to lifetime, excitation and emission spectrum and also polarisation are shown.
References
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Journal ArticleDOI
Endlessly single-mode photonic crystal fiber.
TL;DR: An effective-index model confirms that an all-silica optical fiber made by embedding a central core in a two-dimensional photonic crystal with a micrometer-spaced hexagonal array of air holes can be single mode for any wavelength.
Journal ArticleDOI
Discovery of the soliton self-frequency shift.
TL;DR: The experimental discovery of a continuous shift in the optical frequency of a soliton pulse as it travels down the fiber is described, caused by a Raman self-pumping of the soliton.
Journal ArticleDOI
Self-phase-modulation in silica optical fibers
Roger H. Stolen,Chinlon Lin +1 more
TL;DR: In this paper, the authors report measurements of frequency broadening due to self-phase modulation (SPM) in optical fibers, using single-mode silica-core fibers and mode-locked argon-laser pulses.
Journal ArticleDOI
Group-velocity dispersion in photonic crystal fibers.
TL;DR: The dispersion properties of photonic crystal fibers are calculated by expression of the modal field as a sum of localized orthogonal functions to derive uniform dispersion values for single mode and double mode fibers.
Journal ArticleDOI
Slab-coupled waveguides
TL;DR: The slab-coupled waveguide is a multidielectric waveguide that includes such special cases as the single-material fiber, the rib waveguide, and the strip-loaded film guide as mentioned in this paper.