Electronic Warfare

Adaptive Phase-Coherent Fiber Laser Arrays

Compact adaptive directed energy systems and related technologies are under development. R&D efforts include advanced real-time hybrid parallel image acquisition and processing based on adaptive optical and analog/digital hardware accelerated computation; maximization of tactical directed-energy laser beam irradiance through adaptive coherent beam combining and control techniques; adaptive correction and turbulence mitigation for tactical and long-range atmospheric propagation of laser beams for communication and directed energy weapon systems.

Principal Investigators: 

Jony Jiang Liu, jony.j.liu.civ@mail.mil, (301) 394-1442

Supporting Facilities:
Intelligent Optics Laboratory (IOL) (ALC)
The IOL is equipped with state-of-the-art for supporting sophisticated investigations in adaptive and nonlinear optics, advanced imaging and image processing, and laser communications for ground-to-ground and other applications. A variety of state-of-the-art adaptive optics, wavefront analysis, and image processing tools are used to support advanced techniques for simulation, imaging, and laser propagation system performance.

Ultrashort Pulse Laser Propagation and Interactions with Solid Matter

Our research seeks better understanding of the nature of ultrashort laser pulses to propagate through transparent media (e.g. air) and interact with an opaque solid target.  The primary method of propagation is laser filamentation leading to an intense, concentrated pulse of light that can travel many meters overcoming linear divergence.  We seek to understand how filaments propagate in air and create longer lasting structures that can affect other forms of EM radiation.  We also seek to study the effects of filamentation ablation of solid targets including phenomenological effects of micro- and nano-scale surface features.  Filaments and filament ablation generate a wide range of electromagnetic energy.  Modeling and simulation of both propagation and target interactions is of interest to complement experimental studies.

Principal Investigators: 

Anthony Valenzuela, anthony.r.valenzuela6.civ@mail.mil, 410-278-9876

Supporting Facilities:
Laser Characterization of Energetics Lab (APG)

Equipment Available:
Coherent Hidra-25 laser (25 mJ, 100 fs, 10 Hz), Coherent Astrella (6 mJ, 30 fs, 1 kHz). Ultrafast diagnostics including Shack-Hartmann sensors, FROG, iCCD, spectrometers.

Electronic Attack Device Studies

ARL is studying electronic circuits for their susceptibility to various electromagnetic parameters.  A device forensics capability has been established to study the exposure of electronic circuits by direct injection and RF fields using a Reverberation Chamber, Transverse Electromagnetic Cell (TEM) and in anechoic chambers.

Principal Investigators:

Neal Tesny, neal.tesny.civ@mail.mil, (301) 394-5559

Supporting Facilities:
Direct Injection Probe Station, Reverberation Chamber, Gigahertz Transverse Electromagnetic Cell (GTEM Cell), and Anechoic Chamber

Equipment Available:
Direct Injection Probe Station, Reverberation Chamber, Gigahertz Transverse Electromagnetic Cell (GTEM Cell)