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  1. Article

    Open Access

    The role of transient plasma photonic structures in plasma-based amplifiers

    High power lasers have become useful scientific tools, but their large size is determined by their low damage-threshold optical media. A more robust and compact medium for amplifying and manipulating intense l...

    Grégory Vieux, Silvia Cipiccia, Gregor H. Welsh, Samuel R. Yoffe… in Communications Physics (2023)

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  2. Article

    Gamma-rays from harmonically resonant betatron oscillations in a plasma wake

    The radiation produced when an intense laser interacts with a solid target could provide a cheaper source of X-rays to synchrotrons and free-electron lasers. But they can also produce short bursts of gamma ray...

    Silvia Cipiccia, Mohammad R. Islam, Bernhard Ersfeld, Richard P. Shanks… in Nature Physics (2011)

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  3. No Access

    Chapter and Conference Paper

    An experimental and numerical study of hydrogen-bonding in aqueous salts and methanol

    The hydrogen-bonding spectrum and rotational diffusion decays of aqueous salt solutions have been studied by OHD-OKE spectroscopy. Terahertz absorption, FTIR, and OKE spectroscopy have been combined with molec...

    David A. Turton, Andrew R. Turner, Neil T. Hunt, Gregor H. Welsh… in Ultrafast Phenomena XV (2007)

  4. No Access

    Chapter and Conference Paper

    Terahertz Emission from Nano-structured Metal Surfaces

    Nanostructured metal surfaces were created by depositing a 30 nm layer of bulk gold onto a periodic fused silica transmission grating. By exciting this with a femtosecond laser beam, in air, results in teraher...

    Gregor H. Welsh, Neil T. Hunt, Klaas Wynne in Ultrafast Phenomena XV (2007)