Two-color interferometer for the study of laser filamentation triggered electric discharges in air
| Autor: | Bernard Prade, Jérôme Carbonnel, Aurélien Houard, Guillaume Point, Leonid Arantchouk, Yohann Brelet, André Mysyrowicz |
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| Přispěvatelé: | Interaction Laser-Matière (ILM), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), DGA Grant No. 2013.95.0901 |
| Rok vydání: | 2015 |
| Předmět: |
Physics
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] Electron density FOS: Physical sciences Order (ring theory) Electron Plasma Laser Physics - Plasma Physics law.invention Plasma Physics (physics.plasm-ph) Interferometry Filamentation [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph] law Atomic physics Instrumentation Refractive index |
| Zdroj: | Review of Scientific Instruments Review of Scientific Instruments, American Institute of Physics, 2014, 85, pp.123101. ⟨10.1063/1.4902533⟩ |
| ISSN: | 1089-7623 0034-6748 |
| DOI: | 10.1063/1.4902533⟩ |
| Popis: | 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 1064 nm, 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 $4\times10^{23}~\mathrm{m}^{-3}$ for the electron density, and of $10^{24} ~ \mathrm{m}^{-3}$ 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. Comment: 10 pages, 11 figures |
| Databáze: | OpenAIRE |
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