Two-color interferometer for the study of laser filamentation triggered electric discharges in air

Guillaume Point; Yohann Brelet; Leonid Arantchouk; Jérôme Carbonnel; Bernard Prade; André Mysyrowicz; Aurélien Houard

doi:10.1063/1.4902533

Two-color interferometer for the study of laser filamentation triggered electric discharges in air

Guillaume Point
, Yohann Brelet
, Leonid Arantchouk
, Jérôme Carbonnel
, Bernard Prade
, André Mysyrowicz
, Aurélien Houard

Centre national de la recherche scientifique

Research output: Contribution to journal › Article › peer-review

Abstract

We present a space and time resolved interferometric plasma diagnostic for use on plasmas where neutral-bound electron contribution to the refractive index cannot be neglected. By recording simultaneously the plasma optical index at 532 and 1064nm, we are able to extract independently the neutral and free electron density profiles. We report a phase resolution of 30 mrad, corresponding to a maximum resolution on the order of 4 ×10²²m-³ for the electron density, and of 10²⁴m-³ for the neutral density. The interferometer is demonstrated on centimeter-scale sparks triggered by laser filamentation in air with typical currents of a few tens of A.

Original language	English
Article number	123101
Journal	Review of Scientific Instruments
Volume	85
Issue number	12
DOIs	https://doi.org/10.1063/1.4902533
Publication status	Published - 1 Dec 2014

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10.1063/1.4902533

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title = "Two-color interferometer for the study of laser filamentation triggered electric discharges in air",

abstract = "We present a space and time resolved interferometric plasma diagnostic for use on plasmas where neutral-bound electron contribution to the refractive index cannot be neglected. By recording simultaneously the plasma optical index at 532 and 1064nm, we are able to extract independently the neutral and free electron density profiles. We report a phase resolution of 30 mrad, corresponding to a maximum resolution on the order of 4 ×1022m-3 for the electron density, and of 1024m-3 for the neutral density. The interferometer is demonstrated on centimeter-scale sparks triggered by laser filamentation in air with typical currents of a few tens of A.",

author = "Guillaume Point and Yohann Brelet and Leonid Arantchouk and J{\'e}r{\^o}me Carbonnel and Bernard Prade and Andr{\'e} Mysyrowicz and Aur{\'e}lien Houard",

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T1 - Two-color interferometer for the study of laser filamentation triggered electric discharges in air

AU - Point, Guillaume

AU - Brelet, Yohann

AU - Arantchouk, Leonid

AU - Carbonnel, Jérôme

AU - Prade, Bernard

AU - Mysyrowicz, André

AU - Houard, Aurélien

PY - 2014/12/1

Y1 - 2014/12/1

N2 - We present a space and time resolved interferometric plasma diagnostic for use on plasmas where neutral-bound electron contribution to the refractive index cannot be neglected. By recording simultaneously the plasma optical index at 532 and 1064nm, we are able to extract independently the neutral and free electron density profiles. We report a phase resolution of 30 mrad, corresponding to a maximum resolution on the order of 4 ×1022m-3 for the electron density, and of 1024m-3 for the neutral density. The interferometer is demonstrated on centimeter-scale sparks triggered by laser filamentation in air with typical currents of a few tens of A.

AB - We present a space and time resolved interferometric plasma diagnostic for use on plasmas where neutral-bound electron contribution to the refractive index cannot be neglected. By recording simultaneously the plasma optical index at 532 and 1064nm, we are able to extract independently the neutral and free electron density profiles. We report a phase resolution of 30 mrad, corresponding to a maximum resolution on the order of 4 ×1022m-3 for the electron density, and of 1024m-3 for the neutral density. The interferometer is demonstrated on centimeter-scale sparks triggered by laser filamentation in air with typical currents of a few tens of A.

U2 - 10.1063/1.4902533

DO - 10.1063/1.4902533

M3 - Article

AN - SCOPUS:84918790482

SN - 0034-6748

VL - 85

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 12

M1 - 123101

ER -

Two-color interferometer for the study of laser filamentation triggered electric discharges in air

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