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MOLECULAR-DYNAMICS-NEWS  2001

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Subject:

Postdoc position in Toulouse (france)

From:

Valerie Blanchet <[log in to unmask]>

Reply-To:

Valerie Blanchet <[log in to unmask]>

Date:

Tue, 17 Jul 2001 19:11:59 +0100

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----------------------------------------------------------------------------
    Postdoctoral position in
 Coherent control and femtosecond dynamics in atoms and molecules
    University of Toulouse (FRANCE)

http://www.irsamc.ups-tlse.fr/irsamc/UMR5589/300/femtoweb/principal.html
 ---------------------------------------------------------------------------
-

Funded by the European Community in the frame of the COCOMO network
(Programme: IHP-RTN-99-1)
(http://www.physik.uni-kl.de/w_bergma/CoCoMoNetwork/home.html)
Reserved to European Community citizen
One-year postdoctoral position (extendable to two-years)

The COCOMO network projects build on recent breakthroughs that allow
unprecedented control of atomic and molecular processes by means of coherent
laser radiation. By controlling the relative phase of coherent fields, or by
careful timing of pulse sequences, one can prepare a single preselected
quantum state, or one can control branching in photoionisation or
fragmentation processes or in chemical reaction into a specified channel.

The group in Toulouse develops particularly :
- Studies of different coherent control schemes in simple systems (atoms,
diatomic molecules). These schemes are based on chirped or shaped ultrashort
pulses (or sequences of pulses). Our approach favors a carefull analysis of
the system in order to design the best suited scheme or shape.

- Time resolved photofragment imaging and/or photoelectron spectroscopy in
molecules. Studies of photodissociation, internal conversion, isomerisation
processes

- Combining the two previous approaches, coherent control schemes will be
developed in progressively more complex systems

Motivated candidates should have obtained their PhD in atomic/molecular
physics and/or ultrashort laser studies.
Moreover, an expertise in one or several of the following experimental
techniques will be appreciated :
molecular beam techniques, electron/ion imaging techniques, femtosecond
laser development, pulse shaping ...

Gross monthly salary : 16 000 French Francs (2400 euros)
IF YOU WOULD LIKE to join us, SEND email to :
[log in to unmask]
or
[log in to unmask]

Recent publications of the group :

[1] V. Blanchet, C. Nicole, M. A. Bouchene and B. Girard, “Temporal coherent
control in two-photon transitions : from optical interferences to quantum
interferences,” Phys. Rev. Lett. 78 (14), 2716-9 (1997).
[2] V. Blanchet, M. A. Bouchene and B. Girard, “Temporal coherent control in
the photoionization of Cs2 : Theory and Experiment,” J. Chem. Phys. 108,
4862 (1998).
[3] V. Blanchet, M. Zgierski, T. Seidemann and A. Stolow, “Discerning
Vibronic Molecular Dynamics using time-resolved photoelectron Spectroscopy,”
Nature 401, 52 (1999).
[4] C. Nicole, M. A. Bouchene, S. Zamith, N. Melikechi and B. Girard,
“Saturation of wave-packet interferences : Direct observation of spin
precession in potassium atoms,” Phys. Rev. A 60, R1755 (1999).
[5] C. Dorrer, B. de Beauvoir, C. Le Blanc, S. Ranc, J. P. Rousseau, P.
Rousseau, J. P. Chambaret and F. Salin, “Single-shot real-time
characterization of chirped-pulse amplification systems by spectral phase
interferometry for direct electric-field reconstruction,” Opt. Lett. 24,
1644 (1999).
[6] E. Sokell, S. Zamith, M. A. Bouchene and B. Girard, “Polarization
dependent pump-probe studies in atomic fine structure levels : towards the
production of spin-polarized electrons.,” J. Phys. B 33, 2005 (2000).
[7] K. Resch, V. Blanchet, A. Stolow and T. Seidemann, “Toward Polyatomic
Wave Packet Decomposition: Final State Effects,” J. Phys. Chem. A 105, 2756
(2001).
[8] J. Degert, C. Meier, B. Girard and M. J. J. Vrakking, “Time-dependent
fragment distributions detected via pump-probe ionization: a theoretical
approach,” Eur. Phys. J. D 14, 257 (2001).
[9] S. Zamith, J. Degert, S. Stock, B. De Beauvoir, V. Blanchet, M. A.
Bouchene and B. Girard, “Observation of Coherent Transients in Ultrashort
Chirped Excitation of an undamped Two-Level System,” Phys. Rev. Lett. 87,
033001 (2001).

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