Electric field vector measurements via nanosecond electric-field-induced second-harmonic generation
- Ecole Polytechnique, Palaiseau (France)
- Princeton Univ., NJ (United States)
- Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- The Ohio State Univ., Columbus, OH (United States)
Electric-field-induced second-harmonic generation, or E-FISH, has received renewed interest as a nonintrusive tool for probing electric fields in gas discharges and plasmas using ultrashort laser pulses. An important contribution of this work lies in establishing that the E-FISH method works effectively in the nanosecond regime, yielding field sensitivities of about a kV/cm at atmospheric pressure from a 16 ns pulse. Here, this is expected to broaden its applicability within the plasma community, given the wider access to conventional nanosecond laser sources. A Pockels-cell-based pulse-slicing scheme, which may be readily integrated with such nanosecond laser systems, is shown to be a complementary and cost-effective option for improving the time resolution of the electric field measurement. Using this scheme, a time resolution of ~3 ns is achieved, without any detriment to the signal sensitivity. This could prove invaluable for nonequilibrium plasma applications, where time resolution of a few nanoseconds or less is often critical. Finally, we take advantage of the field vector sensitivity of the E-FISH signal to demonstrate simultaneous measurements of both the horizontal and vertical components of the electric field.
- Research Organization:
- Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); Agence Nationale de la Recherce (ASPEN)
- Grant/Contract Number:
- AC04-94AL85000; NA0003525; ANR-16-CE30-0004
- OSTI ID:
- 1614787
- Alternate ID(s):
- OSTI ID: 1605623; OSTI ID: 1618080
- Report Number(s):
- SAND-2020-3551J; SAND-2019-12119J; OPLEDP; 684998
- Journal Information:
- Optics Letters, Vol. 45, Issue 7; ISSN 0146-9592
- Publisher:
- Optical Society of America (OSA)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Similar Records
Electric Field Measurements to Investigate Sheath Formation in a Nanosecond Pulsed Discharge
Impact of CH4 addition on the electron properties and electric field dynamics in a Ar nanosecond-pulsed dielectric barrier discharge