Publications

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H.H Weits, D. OpetsIntracavity filtering of the spectrum of a short-pulse FEL by inducing interpulse phase coherence, Ieee Journal of Quantum Electronics 935 (1999) 1293-1307.
H.H Weits, D. OeptsContinuously tunable, high-power, single-mode radiation from a short-pulse free-electron laser, Physical Review E 160 (1999) 946-956.
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, 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, 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, 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, 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, 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, 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, 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, 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.

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