Controlling High Harmonic Generation with Molecular Wave Packets

J. Itatani, D. Zeidler, J. Levesque, Michael Spanner, D. M. Villeneuve, P. B. Corkum
2005 Physical Review Letters  
Access and use of this website and the material on it are subject to the Terms and Conditions set forth at Controlling high harmonic generation with molecular wave packets Itatani, J.; Zeidler, D.; Levesque, J.; Spanner, M.; Villeneuve, D. M.; Corkum, P. B. http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=fr L'accès à ce site Web et l'utilisation de son contenu sont assujettis aux conditions présentées dans le site /npsi/ctrl?action=rtdoc&an=21276164〈=en
more » ... p://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=21276164〈=fr READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE. http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. We show that, by controlling the alignment of molecules, we can influence the high harmonic generation process. We observed strong intensity modulation and spectral shaping of high harmonics produced with a rotational wave packet in a low-density gas of N 2 or O 2 .I nN 2 , where the highest occupied molecular orbital (HOMO) has g symmetry, the maximum signal occurs when the molecules are aligned along the laser polarization while the minimum occurs when it is perpendicular. In O 2 , where the HOMO has g symmetry, the harmonics are enhanced when the molecules are aligned around 45 to the laser polarization. The symmetry of the molecular orbital can be read by harmonics. Molecular wave packets offer a means of shaping attosecond pulses.
doi:10.1103/physrevlett.94.123902 pmid:15903921 fatcat:fsk6m5fnqjb67m7jpxspvubpqu