Zobrazeno 1 - 10 of 24 pro vyhledávání: '"Wells, J.P. R."'
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Transient photoluminescence enhancement as a probe of the structure of impurity-trapped excitons in CaF2:Yb2+
Autor: Reid, M.F., Senanayake, P.S., Wells, J.P. R., Berden, G., Meijerink, A., Salkeld, A.J., Duan, C.K., Reeves, R.J.
Publikováno v: Physical Review B, 84, 4
We demonstrate a direct measurement of the energy levels of impurity-trapped excitons in CaF(2):Yb(2+). The radically different radiative decay rates of the lowest exciton state and higher excited states enable the generation of a transient photolumi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::87f2b6a846d05aa7f25a67d8b1c2697f
https://dspace.library.uu.nl/handle/1874/224613
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3
Mid-infrared pump-probe spectroscopy of Si-H stretch modes in porous silicon
Autor: Jobson, K.W., Wells, J.P. R., Vinh, N.Q., Phillips, P.J., Pidgeon, C.R., Dijkhuis, J.I.
Publikováno v: Optical Materials, 30, 740-742
Using the Dutch free electron laser FELIX, we have investigated vibrational relaxation in free standing porous silicon (p-Si) films. Pump-probe measurements resonant with the SiH, SiH2 and O3SiH stretching modes yield temperature dependent measuremen
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::2c3c4bb640a3ce11ddeddeae7785231b
https://www.differ.nl/bibcite/reference/7007
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8
Hole confinement and dynamics in delta-doped Ge quantum dots
Autor: Halsall, M.P., Dunbar, A.D. F., Shiraki, Y., Miura, M., Wells, J.P. R.
Publikováno v: Journal of Luminescence, 108, 329-332
We report picosecond pump-probe studies of the dynamics of inter-level transitions in p-type Ge quantum dot structures using a free electron laser as a source of intense mid-infrared pulses. The wavelength-independent lifetime of around 210 ps is muc
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::fd028f4863c6871fd77ff5befbaae187
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9
Polaron relaxation dynamics in InAs/GaAs self-assembled quantum dots
Autor: Zibik, E.A., Wilson, L.R., Green, R.P., Wells, J.P. R., Phillips, P.J., Carder, D.A., Cockburn, J.W., Skolnick, M.S., Steer, M.J., Y. Liu, H, Hopkinson, M.
Publikováno v: Physica E-Low-Dimensional Systems & Nanostructures, 21, 405-408
Polaron decay in n-type InAs quantum dots has been investigated using energy dependent, mid-infrared pump-probe spectroscopy. By studying samples with differing ground state to first excited state energy separations the relaxation time has been measu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::60fe684ecb2d3705e3f1c42aea0803f4
https://www.differ.nl/bibcite/reference/6519
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