Bowe, P. and O'Neill, R.W. and van der Burgt, Peter J.M. and Slevin, James A. and Raczynski, A. and Zaremba, J. and Chwirot, S. (1998) Two-colour intensity suppression of multiphoton ionization of atomic deuterium. Journal of Physics B: Atomic, Molecular and Optical Physics, 31 (5). pp. 1003-1010. ISSN 0953-4075

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Abstract

We report a strong suppression of the three-photon ionization resonant with the 2s state of atomic deuterium at 243 nm by the introduction of a second colour (486 nm) coupling the 2s and 4p states. This coupling reduces the ionization probability by several orders of magnitude. The experiment is performed using fundamental and second harmonic frequencies of the same laser, with laser intensities up to a maximum value of and an atomic target density of the order of . The production of both ions and D(2s) atoms is measured as a function of the intensity of the fundamental beam (486 nm). The experimental data are compared with a theoretical calculation using essential states and taking into account the experimental laser bandwidths.

Item Type:	Article
Keywords:	Two-colour intensity suppression; multiphoton ionization; atomic deuterium;
Academic Unit:	Faculty of Science and Engineering > Experimental Physics
Item ID:	9809
Identification Number:	https://doi.org/10.1088/0953-4075/31/5/009
Depositing User:	Dr Peter van der Burgt
Date Deposited:	22 Aug 2018 14:39
Journal or Publication Title:	Journal of Physics B: Atomic, Molecular and Optical Physics
Publisher:	IOP Publishing
Refereed:	Yes
Funders:	Forbairt, European Union
URI:	http://iopscience.iop.org
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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