High-speed polarization multiplexed optical scanner for three-dimensional scanning applications
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Date
2004-01-27
Authors
Khan, Sajjad A.
Riza, Nabeel A.
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Photo-Optical Instrumentation Engineers (SPIE)
Published Version
Abstract
A versatile high speed 3-D scanner design is proposed and demonstrated for optical beamforming applications such as free-space laser communications, 3-D displays, scanning 3-D optical microscopy, data retrieval, and vision applications. The scanner consists of fast digital-analog control polarization-based optical beamforming cells resulting in complete three-dimensional beamforming programmability. Features include low electrical power consumption and large aperture beamforming optics, digital repeatability, and time multiplexed accurate analog beamforming. Analog frequency and amplitude control of the nematic liquid crystal beamformer cells allows continuous fine scan programmability over a 0.66 mrad horizontal-deflection, 0.75 mrad vertical deflection, and an infinity to 1.84 m focal length longitudinal scan, all at 1310nm. For the first time is demonstrated a coarse angular deflection of an 8-point linear 1-D scan at 1550 nm with a 35 mus random-access time.A versatile high speed 3-D scanner design is proposed and demonstrated for optical beamforming applications such as free-space laser communications, 3-D displays, scanning 3-D optical microscopy, data retrieval, and vision applications. The scanner consists of fast digital-analog control polarization-based optical beamforming cells resulting in complete three-dimensional beamforming programmability. Features include low electrical power consumption and large aperture beamforming optics, digital repeatability, and time multiplexed accurate analog beamforming. Analog frequency and amplitude control of the nematic liquid crystal beamformer cells allows continuous fine scan programmability over a 0.66 mrad horizontal-deflection, 0.75 mrad vertical deflection, and an infinity to 1.84 m focal length longitudinal scan, all at 1310nm. For the first time is demonstrated a coarse angular deflection of an 8-point linear 1-D scan at 1550 nm with a 35 mus random-access time.
Description
Keywords
Optical scanner , Beam steering , Polarization multiplexing , Liquid crystals , Digital scanner , 3D scanning , Polarization , 3D displays , Free space optics , Optical scanning , Multiplexing , Scanners
Citation
Khan, S. A. and Riza, N. A. (2004) 'High speed polarization multiplexed optical scanner for three dimensional scanning applications', Proceedings of SPIE, 5160, Free-Space Laser Communication and Active Laser Illumination III 2003, Optical Science and Technology, SPIE's 48th Annual Meeting, San Diego, California, United States. doi: 10.1117/12.501352
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Copyright
© 2004 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.