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8 Result(s)

within J. C. Knight Remove this filter Optics, Lasers, Photonics, Optical Devices Remove this filter

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  1. No Access

    Article

    Hollow-core photonic crystal fibres for delivery and compression of ultrashort optical pulses

    We describe the use of tapered hollow-core photonic crystal fibres for delivery and compression of ultrashort optical pulses. We demonstrate delivery of transform-limited pulses with less than 100 fs pulse len...

    J. C. Knight, F. Gérôme, W. J. Wadsworth in Optical and Quantum Electronics (2007)

  2. No Access

    Chapter and Conference Paper

    Phase-sensitive resonance in scattering of continuous waves on femtosecond solitons in photonic crystal fibers

    Using cross-correlation frequency-resolved optical gating we observe the phase-sensitive resonance in the interaction of a soliton with a continuous wave in a birefringent photonic crystal fiber, which leads t...

    A. Efimov, A. J. Taylor, A. V. Yulin, D. V. Skryabin… in Ultrafast Phenomena XV (2007)

  3. No Access

    Chapter

    Control of dispersion in photonic crystal fibers

    Photonic crystal fibers (PCFs) exploit the large index difference between air and glass to achieve modal properties unattainable by conventional fiber techniques.

    P. J. Roberts, B. J. Mangan, H. Sabert, F. Couny… in Fiber Based Dispersion Compensation (2007)

  4. No Access

    Chapter and Conference Paper

    Spectral-temporal soliton dynamics analysis near second zero-dispersion point in photonic crystal fibers

    The propagation dynamics of an ultrashort optical pulse near the second zero-dispersion point of a small-core high-delta photonic crystal fiber is investigated using cross-correlation frequency-resolved optica...

    Anatoly Efimov, A. J. Taylor, F. G. omenetto, N. Joly… in Ultrafast Phenomena XIV (2005)

  5. No Access

    Article

    Maximization of supercontinua in photonic crystal fibers by using double pulses and polarization effects

    We show with sub-20 fs pulses both experimentally and theoretically two techniques to control the width and polarization of spectral supercontinua generated in photonic crystal fibers. The first exploits doubl...

    V.L. Kalashnikov, P. Dombi, T. Fuji, W.J. Wadsworth, J.C. Knight… in Applied Physics B (2003)

  6. No Access

    Article

    Absolute frequency measurement of iodine lines with a femtosecond optical synthesizer

    We have used a single laser femtosecond optical frequency synthesizer together with a widely tunable Nd:YAG laser to measure the absolute frequency of several absorption lines in molecular iodine around 532 nm...

    R. Holzwarth, A.Yu. Nevsky, M. Zimmermann, Th. Udem, T.W. Hänsch… in Applied Physics B (2001)

  7. No Access

    Chapter

    Characterising Whispering-Gallery Modes In Microspheres Using A Near-Field Probe

    We use scanning near-field optical microscopy to study the spatial structure of electromagnetic resonance modes in a high-Q dielectric microcavity of the whispering-gallery mode type. Direct observation of the...

    J. C. Knight, N. Dubreuil, V. Lefevre-Seguin… in Microcavities and Photonic Bandgaps: Physi… (1996)

  8. No Access

    Chapter

    Near Field Optics with High-Q Whispering-Gallery Modes

    High-Q whispering-gallery modes (WGM) are resonant electromagnetic modes which can be observed in dielectric microspheres with diameters larger than about ten times the wavelength [1]. They correspond to high ...

    N. Dubreuil, J. C. Knight, J. Hare, V. Lefevre-Seguin… in Optics at the Nanometer Scale (1996)