Demonstration of 3-dimensional wide angle laser beam scanner using liquid crystals

Thumbnail Image
Khan, Sajjad A.
Riza, Nabeel A.
Journal Title
Journal ISSN
Volume Title
Optical Society of America
Published Version
Research Projects
Organizational Units
Journal Issue
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.
Optical devices , Birefringence , Laser beams , Light polarization , Liquid crystals , Microelectromechanical devices , Optical communication , Beamforming optics , Coarse beam steering , Laser beam scanners , Polarization-sensitive devices
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
© 2004 Optical Society of America