Species-Independent Femtosecond Localized Electric Field Measurement Academic Article uri icon

abstract

  • 2017 American Physical Society. We present an optical measurement method using a femtosecond laser for nonintrusive measurements of electric field strength and orientation in virtually any gas or gas mixture via second-harmonic generation. This simple method takes advantage of the asymmetry in polarizability induced by an applied electric field, which enables the otherwise forbidden second-harmonic generation in any centrosymmetric or homogeneous media. The use of a femtosecond laser source permits high intensities without avalanche breakdown and leads to the measurement of electric field strength down to approximately 100 V/cm in air with submillimeter spatial resolution governed by the confocal parameter and femtosecond temporal resolution governed by the laser-pulse duration.

published proceedings

  • PHYSICAL REVIEW APPLIED

altmetric score

  • 1

author list (cited authors)

  • Dogariu, A., Goldberg, B. M., O'Byrne, S., & Miles, R. B.

citation count

  • 71

complete list of authors

  • Dogariu, Arthur||Goldberg, Benjamin M||O'Byrne, Sean||Miles, Richard B

publication date

  • February 2017