1-D electro-optic beam steering device

Magneto-optic Laser Beam Steering

Piezoelectrically Tuned Electro-optic Device

Towards fabricating stress-tuned lasers on GaAs ubstrates, four major topics have been addressed. First, fabrication of piezoelectric thin films on GaAs has been accomplished. A maximum remnant polarization of 20 ~C/cm2 and a coercive field of 60 kV/cm were achieved. Improvement in the quality of the Si3N 4 passivation layer (from a pinhole density of 1700 mm-2 down to 60 mm-2) and optimization...

A micromechanical beam-steering device for terahertz systems

Beam-steering techniques are required to fully exploit terahertz imaging systems. We propose and model a device employing artificial dielectric techniques to provide a variable phase-control medium. The device consists of two interlocking artificial dielectric surfaces that are initially aligned parallel to each other. By mechanically introducing a relative tilt between the plates, a transmitte...

Neural network controller for Tunable Liquid Crystal Photonic Device work as Laser Beam Steering Device

In this paper, artificial neural network controller (NNC) was designed and used to adjust and control the work of the laser beam steering device consist of liquid crystals cell and other optical components. The target of the neurocontroller is to guarantee smooth deliver and exactly control the laser beam to a required location via control the liquid crystals cell and the optical components. Ba...

Electro-optic lightning detector.

The design, alignment, calibration, and field deployment of a solid-state lightning detector is described. The primary sensing component of the detector is a potassium dihydrogen phosphate electro-optic crystal that is attached in series to a flat-plate aluminum antenna; the antenna is exposed to the ambient thundercloud electric field. A semiconductor laser diode (lambda = 685 nm), polarizing ...