Optics and Photonics Journal

Volume 4, Issue 11 (November 2014)

ISSN Print: 2160-8881   ISSN Online: 2160-889X

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Nonlinear Ionization of Molecules by Intense Transform-Limited Gaussian Laser Pulses

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DOI: 10.4236/opj.2014.411031    3,061 Downloads   3,835 Views  

ABSTRACT

We present in this paper an investigation of the nonlinear process of above-threshold ionization. The process arises when an atomic or molecular system, exposed to an intense laser pulse, continues to absorb more photons than that needed for the ionization to occur. We trigger this nonlinear process in a simple molecular system by exposing it to an intense transform-limited Gaussian laser pulse of 267-nm wavelength which is the third harmonic of an 800-nm wavelength Tisapphire laser. We explore the characteristics of the process by analyzing the kinetic-energy spectra of the electrons ejected from the molecular system under different laser peak intensities.

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Barmaki, S. , Hennani, S. , Albert, M. and Laulan, S. (2014) Nonlinear Ionization of Molecules by Intense Transform-Limited Gaussian Laser Pulses. Optics and Photonics Journal, 4, 309-315. doi: 10.4236/opj.2014.411031.

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