Download or read book Interaction du rayonnement d un laser au n odyme avec de l hydrog ne atomique et mol culaire written by Lu Van Minh and published by . This book was released on 1972 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: THEORIE DE L'IONISATION MULTIPHOTONIQUE. RESULTATS EXPERIMENTAUX OBTENUS POUR 0,53 ET 1,06 MU . OBSERVATION D'UN EFFET DISSOCIATIF DU RAYONNEMENT LASER SUR LA MOLECULE H::(2). UN MECANISME DE FORMATION DES IONS EST PROPOSE POUR EXPLIQUER LA PRESENCE SIMULTANEE DES IONS H**(+) ET DES IONS H::(2)**(+) DETECTES DANS L'INTERACTION AVEC H::(2) ET DANS L'INTERACTION AVEC L'HYDROGENE ATOMIQUE COMPORTANT UN RESIDU MOLECULAIRE. LA PROBABILITE D'IONISATION A 6 PHOTONS DE L'ATOME D'HYDROGENE A PARTIR DE SON ETAT FONDAMENTAL (N=1) EST DETERMINEE ET COMPAREE AUX VALEURS THEORIQUES. L'INFLUENCE DE LA COHERENCE DU RAYONNEMENT EST DISCUTEE. LA PROBABILITE D'IONISATION A 12 PHOTONS DE L'ATOME H (N=1) EST TROP FAIBLE POUR ETRE DETERMINEE AVEC LES ECLAIREMENTS LASER UTILISES

Download or read book Basics of Interaction of Laser Radiation with Matter written by N. B. Delone and published by Atlantica Séguier Frontières. This book was released on 1993 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Theoretical Aspects of Laser Radiation and Its Interaction with Atomic and Molecular Systems written by and published by . This book was released on 1977 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Laser Interactions with Atoms Solids and Plasmas written by Richard M. More and published by Springer Science & Business Media. This book was released on 2013-11-21 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this NATO Advanced Study Institute was to bring together scientists and students working in the field of laser matter interactions in order to review and stimulate developmentoffundamental science with ultra-short pulse lasers. New techniques of pulse compression and colliding-pulse mode-locking have made possible the construction of lasers with pulse lengths in the femtosecond range. Such lasers are now in operation at several research laboratories in Europe and the United States. These laser facilities present a new and exciting research direction with both pure and applied science components. In this ASI the emphasis is on fundamental processes occurring in the interaction of short laser pulses with atoms, molecules, solids, and plasmas. In the case of laser-atom (molecule) interactions, high power lasers provide the first access to extreme high-intensity conditions above 10'8 Watts/em', a new frontier for nonlinear interaction of photons with atoms and molecules. New phenomena observed include multiphoton ionization processes, atomic collisions in the presence of a strong laser field, Coulomb explosion following rapid ionization of a molecule and the production of high harmonics of the laser source. Another important topic reviewed in this ASI is the lasercooling ofatoms.

Download or read book Laser Control of Atoms and Molecules written by Vladilen Letokhov and published by OUP Oxford. This book was released on 2007-02-15 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rather different problems can be lumped together under the general term 'laser control of atoms and molecules'. They include the laser selection of atomic and molecular velocities for the purpose of Doppler-free spectroscopy, laser control of the position and velocity of atoms (i.e. laser trapping and cooling of atoms), and laser control of atomic and molecular processes (ionization, dissociation) with a view of detecting single atoms and molecules and particularly separating isotopes and nuclear isomers. Over the last decades the principal problems posed have been successfully solved, and many of them have evolved remarkably in the subsequent investigations of the international research community. For example, the solution of the problem of laser cooling and trapping of atoms has given birth to the new field of the physics of ultracold matter, i.e. quantum atomic and molecular gases. The laser non-coherent control of uni-molecular processes has found an interesting extension in the field of laser coherent control of molecules. The concept of laser control of position has been successfully demonstrated with microparticles (optical tweezers), concurrently with investigations into atomic control. The laser photo-ionization of molecules on surfaces has led to the development of novel techniques of laser-assisted mass spectrometry of macromolecules, and so on. The aim of this book is to review these topics from a unified or 'coherent' point of view. It will be useful for many readers in various fields of laser science and its applications.

Download or read book Atoms in Intense Laser Fields written by C. J. Joachain and published by Cambridge University Press. This book was released on 2011-12-15 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of lasers capable of producing high-intensity pulses has opened a new area in the study of light-matter interactions. The corresponding laser fields are strong enough to compete with the Coulomb forces in controlling the dynamics of atomic systems and give rise to multiphoton processes. This book presents a unified account of this rapidly developing field of physics. The first part describes the fundamental phenomena occurring in intense laser-atom interactions and gives the basic theoretical framework to analyze them. The second part contains a detailed discussion of Floquet theory, the numerical integration of the wave equations and approximation methods for the low- and high-frequency regimes. In the third part, the main multiphoton processes are discussed: multiphoton ionization, high harmonic and attosecond pulse generation, and laser-assisted electron-atom collisions. Aimed at graduate students in atomic, molecular and optical physics, the book will also interest researchers working on laser interactions with matter.

Download or read book Laser Molecule Interaction written by J. R. Lalanne and published by Wiley-VCH. This book was released on 1996-03-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive reference that treats both laser physics and molecular nonlinear optics in a single volume. Part I offers a review of the fundamental quantum mechanics, tensor analysis and statistical physics necessary for an understanding of optical properties of matter. Part II examines optical sources, describing the laser, its operation and the properties of its waves. Part III presents an in-depth examination of laser-molecule interaction. Includes 35 original problems and solutions that reinforce learning.

Download or read book Interaction of Strong Laser Radiation with Solids and Nonlinear Optical Diagnostics of Surfaces written by Sergej Akhmanov and published by Vieweg+teubner Verlag. This book was released on 1990-09 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summary in French, German, Russian, and Spanish.

Download or read book IONISATION MULTIPLE DES MOLECULES DIATOMIQUES EN CHAMP LASER INTENSE written by JOSE.. LAVANCIER and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: CETTE THESE EST CONSACREE A L'ETUDE EXPERIMENTALE DES INTERACTIONS ENTRE LES MOLECULES DIATOMIQUES ET LE RAYONNEMENT LASER INTENSE. L'ACCENT EST MIS SUR L'INFLUENCE DES PARAMETRES QUI CARACTERISENT LES IMPULSIONS LASER. POUR CELA, LES EXPERIENCES SONT EFFECTUEES DANS UNE LARGE GAMME D'ECLAIREMENT ET POUR DIFFERENTES LONGUEURS D'ONDE ET DUREES D'IMPULSIONS. L'INTERACTION PRODUIT UNE GRANDE VARIETE D'IONS ATOMIQUES ET MOLECULAIRES DONT L'ORIGINE EST DETERMINEE PAR L'ANALYSE DETAILLEE DES SPECTRES DE MASSE. A FORT ECLAIREMENT, ON OBSERVE DEUX MECANISMES D'EXCITATION QUI DEPENDENT DE LA MOLECULE ET DE LA LONGUEUR D'ONDE: 1) SOIT L'INTERACTION NE PEUPLE QUE DES ETATS EXCITES DE L'ION DOUBLEMENT CHARGE, CE PROCESSUS S'EFFECTUANT SANS MODIFICATION DE LA DISTANCE INTERNUCLEAIRE; 2) SOIT LA MOLECULE PERD CINQ ELECTRONS ET PEUT SE DISSOCIER SELON DIVERS CANAUX. ON CONSTATE ALORS QUE LA STRUCTURE MOLECULAIRE GOUVERNE LES DEUX PREMIERES ETAPES D'IONISATION MAIS SEMBLE PEU INFLUENTE LORS DES DERNIERES ETAPES. NOS RESULTATS S'INTERPRETENT A PARTIR DE L'HYPOTHESE D'UNE SEQUENCE D'IONISATION MULTIPLE A DES DISTANCES INTERNUCLEAIRES CROISSANTES. CE SONT ALORS LES ETATS DOUBLEMENT CHARGES QUI INITIALISENT LA REACTION EN SE DISSOCIANT PENDANT L'APPLICATION DE L'IMPULSION LASER. LA THEORIE DE L'IONISATION PAR CHAMP DONNE UNE ESTIMATION DES DISTANCES INTERNUCLEAIRES D'IONISATION ET DES ECLAIREMENTS D'APPARITION DES VOIES DISSOCIATIVES OBSERVEES

Download or read book Theoretical Aspects of Laser Radiation and Its Interaction with Atomic and Molecular Systems written by Thomas F. George and published by . This book was released on 1977* with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: