By S. Het Lin, S. Het Lin, A. A. Villaeys, Y. Fujimura

ISBN-10: 9812791736

ISBN-13: 9789812791733

This e-book provides the most recent advancements and concerns in either experimental and theoretical stories of multi-photon tactics and the spectroscopy of atoms, ions and molecules in physics, chemistry, biology and fabric technology. It includes overview papers compatible for either lively researchers and non-experts who desire to input the sector.

particular cognizance is paid to the hot development of non-linear photon topic interactions in atoms, molecules and interfaces: XUV/soft X-ray, high-order harmonic new release in attosecond regime, high-order harmonic new release, sum frequency iteration, four-wave blending spectroscopy and molecular orientation with mixed electrostatic and excessive, non-resonant laser fields.

Contents: Nonlinear Optics for Characterizing XUV/Soft X-Ray High-Order Harmonic Fields in Attosecond Regime (Y Nabekawa & okay Midorikawa); Signatures of Molecular constitution and Dynamics in High-Order Harmonic iteration (M Lein & C C Chiril ); Molecular Manipulation recommendations and Their functions (H Sakai); Sum Frequency iteration: An creation with fresh advancements and present concerns (M J Shultz); Propagation and Intramolecular Coupling results in Four-Wave blending Spectroscopy (J L Paz); regulate of Molecular Chirality through Lasers (K Hoki & Y Fujimura).

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The pulse width estimated in their experiment have been much longer than that expected. April 11, 2008 10:58 B-600 ch01 FA Nonlinear Optics for Characterizing XUV 35 The autocorrelation trace by the observation of the ion yields, however, does not give us an enough information for determining the pulse shape of an APT because the spectral-phase difference between the harmonic fields cannot be found in that trace. 25 The electron spectra originating from two-photon above-threshold ionization (TP-ATI) can be used for the spectrally resolved autocorrelation.

The frequency offset (FO) δν( < νrep ) should be included in each mode frequency because the phase velocity and the group velocity of the laser pulses in the oscillator cavity are generally not the same due to the dispersions of many optical elements inside the cavity. In particular, the additional change of the refractive index with the thermal effect inside the solid state laser material (which is the most common Ti:sapphire), induced by the fluctuation of the pump power of the pumping laser, notably affect the stability of δν.

In particular, the doubly charged state on a dissociative potential curve, mainly contributed from the repulsion with the Coulomb force, yields two singly charged atomic nitrogen ions having large kinetic energy release, which can be experimentally distinguished from the doubly charged nitrogen molecule in a time-of-flight mass spectrum. Thus, we have concentrated on finding this phenomena, known as the Coulomb explosion of a molecule, with two-photon absorption of the harmonic fields forming the APT (we called this phenomenon as two-photon Coulomb explosion, TP-CE), and then executed the interferometric autocorrelation measurement.

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Advances In Multi-Photon Processes And Spectroscopy by S. Het Lin, S. Het Lin, A. A. Villaeys, Y. Fujimura

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