Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Girard, Bertrand"'
Autor:
Popovic, Batric, Varlot, Jeanne, Girard-Bertrand, Barbara, Basile, Jean Louis, Thouvenot, Christophe, Fay, Renaud, Villani, Nicolas, Tran, Nguyen, Camenzind, Edoardo
Publikováno v:
In The American Journal of Cardiology 15 October 2022 181:25-31
Autor:
Raffael, Kevin, Blanchet, Valerie, Chatel, Béatrice, Turri, Giorgio, Girard, Bertrand, Garcia, Ivan Anton, Wilkinson, Iain, Whitaker, Benjamin J
We measure the photoionization cross-section of vibrationally excited levels in the S2 state of azulene by femtosecond pump-probe spectroscopy. At the wavelengths studied (349-265 nm in the pump) the transient signals exhibit two distinct and well-de
Externí odkaz:
http://arxiv.org/abs/0806.3401
Autor:
Blanchet, Valerie, Raffael, Kevin, Turri, Giorgio, Chatel, Béatrice, Girard, Bertrand, Garcia, Ivan Anton, Wilkinson, Iain, Whitaker, Benjamin J
Publikováno v:
The Journal of Chemical Physics 128, 16 (2008) 164318
Pump-probe photoionization has been used to map the relaxation processes taking place from highly vibrationally excited levels of the S2 state of azulene, populated directly or via internal conversion from the S4 state. Photoelectron spectra obtained
Externí odkaz:
http://arxiv.org/abs/0806.3400
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics 41 (2008) 074023
Spin precession in Rubidium atoms is investigated through a pump-probe technique. The excited wave packet corresponds to a precession of spin and orbital angular momentum around the total angular momentum. We show that using shaped laser pulses allow
Externí odkaz:
http://arxiv.org/abs/0802.2986
Publikováno v:
Physical Review Letters 100, 03 (2008) 030202
We report on the successful operation of an analogue computer designed to factor numbers. Our device relies solely on the interference of classical light and brings together the field of ultrashort laser pulses with number theory. Indeed, the frequen
Externí odkaz:
http://arxiv.org/abs/0709.1906
Autor:
Merkel, Wolfgang, Mack, Holger, Schleich, Wolfgang P., Lutz, Eric, Paulus, Gerhard G., Girard, Bertrand
Publikováno v:
Physical Review A: Atomic, Molecular and Optical Physics 76, 02 (2007) 023417
We consider a two-photon transition in a specific ladder system driven by a chirped laser pulse. In the weak field limit, we find that the excited state probability amplitude arises due to interference of multiple quantum paths which are weighted by
Externí odkaz:
http://arxiv.org/abs/quant-ph/0702122
Publikováno v:
Optics Communications 264 (15/08/2006) 256-263
In a two level atom, real-time quantum state holography is performed through interferences between quantum states created by a reference pulse and a chirped pulse resulting in coherent transients. A sequence of several measurements allows one to meas
Externí odkaz:
http://arxiv.org/abs/physics/0601215
Publikováno v:
Physical Review Letters 96 (17/03/2006) 103002
We present the principle and experimental demonstration of Time Resolved Quantum State Holography. The quantum state of an excited state interacting with an ultrashort chirped laser pulse is measured during this interaction. This has been obtained by
Externí odkaz:
http://arxiv.org/abs/physics/0510202
We have implemented a new approach for measuring the time-dependent intensity and phase of ultrashort optical pulses. It is based on the interaction between shaped pulses and atoms, leading to coherent transients.
Comment: 4 pages Accepted in Op
Comment: 4 pages Accepted in Op
Externí odkaz:
http://arxiv.org/abs/physics/0510074
Autor:
Zamith, Sebastien, Degert, Jerome, Stock, Sabine, de Beauvoir, Beatrice, Blanchet, Valerie, Bouchene, M. Aziz, Girard, Bertrand
The effects of Coherent excitation of a two level system with a linearly chirped pulse are studied theoretically and experimentally (in Rb (5s - 5p)) in the low field regime. The Coherent Transients are measured directly on the excited state populati
Externí odkaz:
http://arxiv.org/abs/physics/0105032