VEBBER, GUILHERME C.CORREIA, RICARDO R.B.SAMAD, RICARDO E.VIEIRA JUNIOR, NILSON D.2014-11-172014-11-182015-04-012014-11-172014-11-182015-04-01VEBBER, GUILHERME C.; CORREIA, RICARDO R.B.; SAMAD, RICARDO E.; VIEIRA JUNIOR, NILSON D. Optogalvanic signal optimization through the coherent control of multiphoton ionization. In: LATIN AMERICA OPTICS AND PHOTONICS CONFERENCE, September 27-30, 2010, Recife, PE. <b>Proceedings...</b> Disponível em: http://repositorio.ipen.br/handle/123456789/17959.http://repositorio.ipen.br/handle/123456789/17959This work presents and discusses the results on the optimization of the Optogalvanic Signal (OGS) induced by ultrafast shaped laser pulses in an electrical glow discharge in argon. The electrical glow is produced in a Hollow Cathode Discharge (HCD) generated in a cell containing a tube-shaped cathode coaxially aligned to the line joining the anode. The OGS generated in this discharge reflects the impedance change induced by the interaction of a resonant laser radiation with one or more atomic transitions in the gas. This gas is electrically excited within the HCD and operated in the subnormal regime, which corresponds to the region of the voltage versus current curve that exhibits a negative dynamic resistance. This electric behavior allows the amplification of the OGS by orders of magnitude [1].openAccessargonelectric dischargeshollow cathodeslaser radiationcathodesTexto completo de eventohttps://orcid.org/0000-0003-0092-9357https://orcid.org/0000-0001-7762-8961