Controlling ground-state rotational dynamics of molecules by shaped femtosecond laser pulses

Journal Article · Thu Apr 01 04:00:00 EST 2004 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.69.043401· OSTI ID:20641010

Renard, M; Hertz, E; Lavorel, B; Faucher, O ^[1]

---

1. Laboratoire de Physique de l'Universite de Bourgogne, UMR CNRS 5027, Boite Postale 47 870, 21 078 Dijon cedex (France)

We report controlled excitation of ground-state rotational wave packet by pulse-shaping technique. The experiment is conducted in nitrogen (N{sub 2}) at room temperature and atmospheric pressure. A femtosecond laser pulse produces rotational coherences in the vibronic ground state of N{sub 2} through an impulsive Raman process. The laser pulse is tailored using a spatial light modulator producing spectral phase modulation. Periodic phase steps are applied in order to control the excitation of specific rotational Raman transitions. The outcome is the modification of the relative excitation between odd and even rotational states which allows the control of the symmetry and rephasing period of the wave packet.

• OSTI ID: 20641010
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 69; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATMOSPHERIC PRESSURE
CONTROL
EXCITATION
GROUND STATES
LASER RADIATION
MODIFICATIONS
MODULATION
MOLECULES
NITROGEN
OPTICS
PERIODICITY
PHOTON-MOLECULE COLLISIONS
PULSES
RAMAN SPECTRA
ROTATIONAL STATES
SYMMETRY
TEMPERATURE RANGE 0273-0400 K
VISIBLE RADIATION
WAVE PACKETS