Phased-array electro-optic steering of large aperture laser beams using ferroelectrics

We present a device concept for scanning large (>1cm) laser beams using a domain microengineered 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...

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Bibliographic Details
Published in:Applied physics letters 2005-05, Vol.86 (21)
Main Authors: Scrymgeour, David A., Tian, L., Gopalan, Venkatraman, Chauvin, Daren, Schepler, Kenneth L.
Format: Article
Language:English
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Summary:We present a device concept for scanning large (>1cm) laser beams using a domain microengineered 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 this concept, a five-stage cascaded rectangular domain micropatterned scanner device with 13 beamlet channels was fabricated in LiTaO3 and was demonstrated to deflect a 1.064μm infrared laser beam by a total of 10.3° at 5.39kV∕mm.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1935033