Bulletin of the American Physical Society
2013 Joint Meeting of the APS Division of Atomic, Molecular & Optical Physics and the CAP Division of Atomic, Molecular & Optical Physics, Canada
Volume 58, Number 6
Monday–Friday, June 3–7, 2013; Quebec City, Canada
Session B7: Invited Session: Strong-field Ionization and Laser Control |
Hide Abstracts |
Chair: Thomas Weinacht, SUNY - Stony Brook Room: 303 |
Tuesday, June 4, 2013 10:30AM - 11:00AM |
B7.00001: Spinning molecules into extreme rotational states with an optical centrifuge Invited Speaker: Amy Mullin |
Tuesday, June 4, 2013 11:00AM - 11:30AM |
B7.00002: Multielectron strong field calculations of molecular ionization Invited Speaker: Michael Spanner |
Tuesday, June 4, 2013 11:30AM - 12:00PM |
B7.00003: Laser induced alignment of molecules dissolved in Helium nanodroplets Invited Speaker: Henrik Stapelfeldt Laser induced alignment, the method to confine the principal axes of molecules along axes fixed in the laboratory frame, is now used in a range of applications in physics and chemistry. With a few exceptions all studies have focused on isolated molecules in the gas phase. In this talk we present experimental studies of laser induced alignment of molecules embedded in the solvent of a superfluid helium nanodroplet [1]. Alignment is conducted in both the adiabatic and the nonadiabtic regime where the alignment pulse is much longer or shorter, respectively, than the rotational period of the molecules. In the nonadiabatic limit, induced by a few-hundred femtosecond long laser pulse, we show that methyliodide molecules reach an alignment maximum 20 ps after the alignment pulse and gradually loose the alignment completely in another 60 ps. This dynamics is completely different from that of isolated methyliodide molecules where alignment occurs in regularly spaced (by 33.3 ps), narrow time windows, termed revivals. Adiabatic alignment, induced by 10 ns laser pulses, resembles the gas phase behavior although the observed degree of alignment falls below that of isolated molecules.\\[4pt] Work done in collaboration with Dominik Pentkehner, Department of Chemistry, Aarhus University; Jens Hedegaard Nielsen, Department of Physics, Aarhus University; Alkwin Slenczka, Department of Chemistry, Regensburg University; and Klaus M{\o}lmer, Department of Physics, Aarhus University. \\[4pt] [1] D. Pentlehner \textit{et al.}, arXiv:1212.2862 (2012). [Preview Abstract] |
Tuesday, June 4, 2013 12:00PM - 12:30PM |
B7.00004: Attosecond dynamics in ionization of atoms and molecules Invited Speaker: Andreas Becker Recent advances in laser technology regarding the development of atto- and sub-attosecond laser pulses provide the opportunity to study the temporal dynamics of electrons in basic quantum processes, such as photoionization and strong-field ionization of atoms and molecules. Based on the results of numerical simulations and theoretical analysis a few examples of the resolution of attosecond dynamics will be discussed. These include the laser-driven non-adiabatic dynamics of an electron in a chemical bond of a molecule leading to ionization and dissociation, the exchange of energy between electrons and nuclei as well as among electrons following photon absorption from the field and the temporal resolution of a photoionization process. [Preview Abstract] |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700