Publications

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H.H WeitsCoherence studies on a short-pulse FEL, PhD (1998) 
H.H Weits, G.M.H. Knippels, G.HC van Werkhoven, D. Oepts, P.W van AmersfoortInfluence of the cavity geometry on the micropulse output of FELIX in the limit-cycle regime, Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment 1-3375 (1996) ABS75-ABS76.
J.PR Wells, G.D JonesDynamics of H- local-mode vibrations in LaF3, CeF3, PrF3, and NdF3 crystals, Physical Review B 171 (2005) 
J.PR Wells, E.D van Hattum, R.EI Schropp, P.J Phillips, A.A Carder, F Habraken, J.I DijkhuisUltrafast spectroscopy of localised vibrational modes in amorphous silicon using a free electron laser, Phys. Status Solidi B-Basic Res. 15241 (2004) 3474-3479.
J.PR Wells, R.J ReevesPolarized laser selective excitation and Zeeman infrared absorption of C-4v and C-3v symmetry centers in Eu3+-doped CaF2, SrF2, and BaF2 crystals, Physical Review B 364 (2001) 
J.PR Wells, M. Yamaga, T.PJ Han, H.G GallagherInfrared absorption, laser excitation and crystal-field analyses of the C-4v symmetry centre in KY3F10 doped with Pr3+, Journal of Physics-Condensed Matter 2412 (2000) 5297-5306.
J.PR Wells, D.G Lidzey, P.J Phillips, D.A Carder, A.M FoxUltrafast measurements, of vibrational relaxation in the conjugated polymer poly(9,9-dioctylfluorene), Applied Physics Letters 1585 (2004) 3080-3082.
J.PR Wells, M. Yamaga, R.W Mosses, T.PJ Han, H.G Gallagher, T. YosidaPolarized laser selective excitation and electron paramagnetic resonance of Er3+ centers in SrLaAlO4 crystals, Physical Review B 661 (2000) 3905-3914.
J.PR Wells, A. Sugiyama, T.PJ Han, H.G GallagherA spectroscopic comparison of samarium-doped LiYF4 and KY3F10, Journal of Luminescence 87-9 (2000) 1029-1031.
J.PR Wells, M. Yamaga, N. Kodama, T.PJ HanPolarized laser spectroscopy and crystal-field analysis of Er3+ doped CaGdAlO4, Journal of Physics-Condensed Matter 3911 (1999) 7545-7555.
J.PR Wells, G.D Jones, D.A Carder, P.J PhillipsFree Electron Laser Studies of Local Mode Linewidths in SrF2:Gd3+:H-, Physica Status Solidi (c) 1 (2004) 3011-3014.
J.PR Wells, H.C Gallagher, T.PJ HanCrystal-growth and spectroscopy of Er3+ ions in calcium gallogermanate, Journal of Crystal Growth 3217 (2000) 302-310.
J.PR Wells, E.D van Hattum, P.J Phillips, D.A Carder, F Habraken, J.I DijkhuisDegenerate four wave mixing spectroscopy of oxygen vibrations in amorphous silicon, J. Lumines. 1-4108 (2004) 173-176.
J.PR Wells, R.J ReevesPolarized laser-selective excitation and Zeeman infrared absorption of Sm3+ centers in CaF2 and SrF2 crystals, Physical Review B 2061 (2000) 13593-13608.
J.PR Wells, I.V Bradley, G.D Jones, C.R PidgeonFree-electron-laser studies of the relaxation of H- and D- local modes in CaF2, SrF2, and BaF2, Physical Review B 1464 (2001) 
J.PR Wells, A. Sugiyama, T.PJ Han, H.G GallagherLaser site selective excitation of KY3F10-doped with samarium, Journal of Luminescence 1-385 (1999) 91-102.
J.PR Wells, P.J Phillips, N. Tomozeiu, F Habraken, J.I DijkhuisInfrared transient grating and photon echo spectroscopy of oxygen vibrational modes in amorphous silicon thin films, Physical Review B 1168 (2003) 
J.PR Wells, T.PJ Han, M. Yamaga, N. Kodama, H.G GallagherDisordered laser gain media: Er3+ doped CaGdAlO4 and Ca3Ga2Ge4O14, Journal of Luminescence 87-9 (2000) 1093-1095.
J.PR Wells, R.EI Schropp, L.FG van der Meer, J.I DijkhuisUltrafast vibrational dynamics and stability of deuterated amorphous silicon, Physical Review Letters 1289 (2002) 
J.PR Wells, C.W Rella, I.V Bradley, I. Galbraith, C.R PidgeonCoherent dynamics of the localized vibrational modes of hydrogen in CaF2, Physical Review Letters 2184 (2000) 4998-5001.

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