Demonstration of 3-dimensional wide angle laser beam scanner using liquid crystals
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Date
2004-03-08
Authors
Khan, Sajjad A.
Riza, Nabeel A.
Journal Title
Journal ISSN
Volume Title
Publisher
Optical Society of America
Published Version
Abstract
Design and demonstration of a versatile liquid crystal-based scanner is shown for steering a laser beam in three dimensions. The scanner consists of a unique combination of digital and analog control polarization-based beamforming optics resulting in both continuous and random fashion beam steering. The design features a novel device biasing method, large aperture beamforming optics, low electrical power consumption, and ultra-fine as well as wide angle coarse beam steering. Demonstrations include one, two and three dimensional beam steering with a maximum of 40.92° continuous scan, all at 1550 nm. The minimum scanner aperture is 1 cm diameter and uses a combination of ferroelectric and nematic liquid crystals in addition to Rutile crystal birefringent prisms.
Description
Keywords
Optical devices , Birefringence , Laser beams , Light polarization , Liquid crystals , Microelectromechanical devices , Optical communication , Beamforming optics , Coarse beam steering , Laser beam scanners , Polarization-sensitive devices
Citation
Khan, S. A. and Riza, N. A. (2004) 'Demonstration of 3-dimensional wide angle laser beam scanner using liquid crystals', Optics Express, 12 (55) pp. 868-882. doi: 10.1364/OPEX.12.000868
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Copyright
© 2004 Optical Society of America