Photodissociation of Small Molecules with Shaped Intense Femtosecond Laser Pulses

Photodissociation of Small Molecules with Shaped Intense Femtosecond Laser Pulses PDF Author: Uri Lev
Publisher:
ISBN:
Category :
Languages : en
Pages : 83

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Photodissociation of Small Molecules with Shaped Intense Femtosecond Laser Pulses

Photodissociation of Small Molecules with Shaped Intense Femtosecond Laser Pulses PDF Author: Uri Lev
Publisher:
ISBN:
Category :
Languages : en
Pages : 83

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Femtosecond Laser Filamentation

Femtosecond Laser Filamentation PDF Author: See Leang Chin
Publisher: Springer Science & Business Media
ISBN: 1441906886
Category : Science
Languages : en
Pages : 138

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Book Description
This book attempts to give a discussion of the physics and current and potential applications of the self-focusing of an intense femtosecond laser pulse in a tra- parent medium. Although self-focusing is an old subject of nonlinear optics, the consequence of self-focusing of intense femtosecond laser pulses is totally new and unexpected. Thus, new phenomena are observed, such as long range lam- tation, intensity clamping, white light laser pulse, self-spatial ltering, self-group phase locking, self-pulse compression, clean nonlinear uorescence, and so on. Long range propagation at high intensity, which is seemingly against the law of diffraction, is probably one of the most exciting consequences of this new sub- eld of nonlinear optics. Because the intensity inside the lament core is high, new ways of doing nonlinear optics inside the lament become possible. We call this lamentation nonlinear optics. We shall describe the generation of pulses at other wavelengths in the visible and ultraviolet (UV) starting from the near infrared pump pulse at 800 nm through four-wave-mixing and third harmonic generation, all in gases. Remotely sensing uorescence from the fragments of chemical and biological agents in all forms, gaseous, aerosol or solid, inside the laments in air is demonstrated in the labo- tory. The results will be shown in the last part of the book. Through analyzing the uorescence of gas molecules inside the lament, an unexpected physical process pertaining to the interaction of synchrotron radiation with molecules is observed.

Photodissociation Dynamics of Small Molecules

Photodissociation Dynamics of Small Molecules PDF Author: Djula Eres
Publisher:
ISBN:
Category :
Languages : en
Pages : 186

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Femtochemistry and Femtobiology

Femtochemistry and Femtobiology PDF Author: Abderrazzak Douhal
Publisher: World Scientific
ISBN: 9810248660
Category : Science
Languages : en
Pages : 854

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Book Description
This book contains important contributions from top international scientists on the-state-of-the-art of femtochemistry and femtobiology at the beginning of the new millennium. It consists of reviews and papers on ultrafast dynamics in molecular science.The coverage of topics highlights several important features of molecular science from the viewpoint of structure (space domain) and dynamics (time domain). First of all, the book presents the latest developments, such as experimental techniques for understanding ultrafast processes in gas, condensed and complex systems, including biological molecules, surfaces and nanostructures. At the same time it stresses the different ways to control the rates and pathways of reactive events in chemistry and biology. Particular emphasis is given to biological processes as an area where femtodynamics is becoming very useful for resolving the structural dynamics from techniques such as electron diffraction, and X-ray and IR spectroscopy. Finally, the latest developments in quantum control (in both theory and experiment) and the experimental pulse-shaping techniques are described.

Photodissociation Dynamics of Small Molecules

Photodissociation Dynamics of Small Molecules PDF Author: W. M. Jackson
Publisher:
ISBN:
Category :
Languages : en
Pages : 97

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Book Description
The recent advancement of photodissociation dynamics of about 60 small molecules has been presented. The emphasis is placed on the primary photochemical process and the energy partitioning in photofragments. Compounds discussed in this report include: Hydrogen-oxygen Compounds; Aldehydes, Ketones and Acids; Group Six Triatomic Oxides; Nitrogen-Oxygen Compounds; Nitrogen-Hydrogen Compounds; Cyanide Compounds; Sulfur containing Compounds; Halogen containing Compounds; Acetylenic Compounds; Originator supplied keywords include: Lasers; Laser induced fluorescence; Quantum state analysis; Dissociation dynamics; Water; Hydrogen peroxide, Formaldehyde, Ozone, Acetylene compounds; Metal halides; Alkyl halides; NH compounds; NO; and NO2 compounds; CO and CO2 compounds; Sulfur compounds.

The Kinetics of Two-Stage Selective Photodissociation of Molecules by Laser Emission

The Kinetics of Two-Stage Selective Photodissociation of Molecules by Laser Emission PDF Author: V. S. Letokhov
Publisher:
ISBN:
Category :
Languages : en
Pages : 38

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Book Description
Two-stage photodissociation of molecules by laser radiation for selective bond breaking in molecules involves irradiation of a molecule by two laser pulses of different frequencies. One radiation is in resonance with the vibrational-rotational transition of the molecule and effects an oscillatory molecular excitation. The second radiation effects photodissociation of the oscillation-excited molecules. In practice the first radiation must be in the infrared region and the second in the ultraviolet. The relationships between the parameters of infrared and ultraviolet radiation which make it possible to satisfy this requirement, i.e., to obtain a considerable yield of the products of photodissociation with low losses of the energy of laser radiation are found.

Atoms, Solids, and Plasmas in Super-Intense Laser Fields

Atoms, Solids, and Plasmas in Super-Intense Laser Fields PDF Author: Dimitri Batani
Publisher: Springer Science & Business Media
ISBN: 9780306466151
Category : Science
Languages : en
Pages : 434

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Book Description
Proceedings of the 30th Course of the International School of Quantum Electronics on Atoms, Solids and Plasmas in Super-Intense Laser Fields, held 8-14 July, in Erice, Sicily

Time-Dependent Quantum Molecular Dynamics

Time-Dependent Quantum Molecular Dynamics PDF Author: J. Broeckhove
Publisher: Springer Science & Business Media
ISBN: 1489923268
Category : Science
Languages : en
Pages : 422

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Book Description
From March 30th to April 3rd, 1992, a NATO Advanced Research workshop entitled "Time Dependent Quantum Molecular Dynamics: Theory and Experiment" was held at Snowbird, Utah. The organizing committee consisted of J. BROECKHOVE (Antwerp, Belgium), L. CEDERBAUM (Heidelberg, Germany), L. LATHOUWERS (Antwerp, Belgium), N. OHRN (Gainesville, Florida) and J. SIMONS (Salt Lake City, Utah). Fifty-two participants from eleven different countries attended the meeting at which thirty-three talks and one poster session were held. Twenty-eight participants submitted contributions to the proceedings of the meeting, which are reproduced in this volume. The workshop brought together experts in different areas 0 f molecular quantum dynamics, all adhering to the time dependent approach. The aim was to discuss and compare methods and applications. The ~amiliarityo~ the aUdience with the concepts o~ time dependent approaches greatly facilitated topical discussions and probing towards new applications. A broad area of subject matter was covered including time resolved laser chemistry, intramolecular dynamics, photodissociation dynamics, reactive and inelastic collisions as well as new time dependent methodologies. This diversity in applications is reflected in the contributions included in this volume .

Femtosecond Laser-Matter Interaction

Femtosecond Laser-Matter Interaction PDF Author: Eugene G. Gamaly
Publisher: CRC Press
ISBN: 9814241814
Category : Science
Languages : en
Pages : 370

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Book Description
This is the first comprehensive treatment of the interaction of femtosecond laser pulses with solids at nonrelativistic intensity. It connects phenomena from the subtle atomic motion on the nanoscale to the generation of extreme pressure and temperature in the interaction zone confined inside a solid. The femtosecond laser-matter interaction has already found numerous applications in industry, medicine, and materials science. However, there is no consensus on the interpretation of related phenomena. With mathematics kept to a minimum, this is a highly engaging and readable treatment for students and researchers in science and engineering. The book avoids complex mathematical formulae, and hence the content is accessible to nontechnical readers. Useful summaries after each chapter provide compressed information for quick estimates of major parameters in planned or performed experiments. The book connects the basic physics of femtosecond laser-solid interactions to a broad range of applications. Throught the text, basic assumptions are derived from the first principles, and new results and ideas are presented. From such analyses, a qualitative and predictive framework for the field emerges, the impact of which on applications is also discussed.

Physics Briefs

Physics Briefs PDF Author:
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 1118

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