Time resolved measurement of intersubband lifetime in GaAs quantum wells using a two-colour free electron laser

1996 ◽  
Vol 32 (25) ◽  
pp. 2357 ◽  
Author(s):  
P. Boucaud ◽  
F.H. Julien ◽  
R. Prazeres ◽  
J.-M. Ortega ◽  
V. Berger ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Free Electron ◽  
Free Electron Laser ◽  
Time Resolved

scholarly journals Two - Color Mid-Infrared Spectroscopy of Isoelectronic Centers in Silicon

2003 ◽  
Vol 770 ◽  
Author(s):  
N.Q. Vinh ◽  
T. Gregorkiewicz
Keyword(s):  
Excited States ◽  
Free Electron ◽  
Free Electron Laser ◽  
Materials Science ◽  
Time Resolved ◽  
Mid Infrared ◽  
Semiconductor Physics ◽  
Open Questions ◽  
Time Resolved Photoluminescence ◽  
Tunable Source

AbstractOne of the open questions in semiconductor physics is the origin of the small splittings of the excited states of bound excitons in silicon. A free electron laser as a tunable source of the mid-infrared radiation (MIR) can be used to investigate such splittings of the excited states of optical centers created by transition metal dopants in silicon. In the current study, the photoluminescence from silver and copper doped silicon is investigated by two color spectroscopy in the visible and the MIR. It is shown the PL due recombination of exciton bound to Ag and Cu is quenched upon application of the MIR beam. The time-resolved photoluminescence measurements and the quenching effects of these bands are presented. By scanning the wavelength of the free-electron laser ionization spectra of relevant traps involved in photoluminescence are obtained. The formation and dissociation of the bound excitons, and the small splittings of the effective-mass excited states are discussed. The applied experimental method allows correlation of DLTS data on trapping centers to specific channels of radiative recombination. It can be applied for spectroscopic analysis in materials science of semicondutors.

scholarly journals Time-resolved photoelectron imaging using a femtosecond UV laser and a VUV free-electron laser

2010 ◽  
Vol 81 (3) ◽  
Author(s):  
S. Y. Liu ◽  
Y. Ogi ◽  
T. Fuji ◽  
K. Nishizawa ◽  
T. Horio ◽  
...  
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Uv Laser ◽  
Photoelectron Imaging ◽  
Time Resolved

Free electron laser saturation spectroscopy of neutral donors and negative donor ions confined in GaAs/AlGaAs quantum wells

1997 ◽  
Vol 21 (2) ◽  
pp. 241-246 ◽  
Author(s):  
S.R. Ryu ◽  
G. Herold ◽  
J. Kono ◽  
M. Salib ◽  
B.D. McCombe ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Free Electron ◽  
Free Electron Laser ◽  
Saturation Spectroscopy

Picosecond nonlinear optics in semiconductor quantum wells with SCA free-electron laser

1993 ◽  
Author(s):  
Zhiwei Xu ◽  
Li X. Zheng ◽  
Jury V. Vandyshev ◽  
Gary W. Wicks ◽  
Philippe M. Fauchet ◽  
...  
Keyword(s):  
Nonlinear Optics ◽  
Quantum Wells ◽  
Free Electron ◽  
Free Electron Laser ◽  
Semiconductor Quantum Wells

Time-Resolved Serial Femtosecond Crystallography at the European X-ray Free Electron Laser

2019 ◽  
Author(s):  
Marius Schmidt ◽  
Suraj Pandey ◽  
Adrian Mancuso ◽  
Richard Bean
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Crystallographic Data ◽  
Time Resolved ◽  
X Ray ◽  
Serial Femtosecond Crystallography

Abstract This protocol introduces step by step into the collection of time resolved crystallographic data and their analysis at the European Free Electron Laser.

scholarly journals Two mirror X-ray pulse split and delay instrument for femtosecond time resolved investigations at the LCLS free electron laser facility

2016 ◽  
Vol 24 (11) ◽  
pp. 11768 ◽  
Author(s):  
Nora Berrah ◽  
Li Fang ◽  
Brendan F Murphy ◽  
Edwin Kukk ◽  
Timur Y. Osipov ◽  
...  
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Time Resolved ◽  
X Ray ◽  
Laser Facility
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