Phased-Array Electro-Optic Steering of Large Aperture Laser Beams Using Ferroelectrics

摘要

We present a device concept for scanning large (> 1 cm) laser beams using a domain micro-engineered ferroelectric device. In our design, the large input beam is divided into smaller beamlets, which are then individually deflected through an angle, and then recombined in the far field to reconstruct the large beam. As a demonstration of concept, a 5-state cascaded rectangular domain micropatterned scanner device with 11 beamlet channels was fabricated in LiTaO3 and was demonstrated to deflect a 1.064-micron infrared laser beam by a total of 10.3 deg at 5.39 kV/mm.