Buske, Ivo and Riede, Wolfgang (2006) Sub-µrad Laser Beam Tracking. In: Proceedings of SPIE Europe: Optics/Photonics in Security and Defence 2006. SPIE Europe: Optics/Photonics in Security and Defence 2006, 2006-09-11 - 2006-09-14, Stockholm, Sweden.
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We compare active optical elements based on different technologies to accomplish the requirements of a 2 dim. fine tracking control system. A cascaded optically and electrically addressable spatial light modulator (OASLM) based on liquid crystals (LC) is used for refractive beam steering. Spatial light modulators provide a controllable phase wedge to generate a beam deflection. Additionally, a tip/tilt mirror approach operating with piezo-electric actuators is investigated. A digital PID controller is implemented for closed-loop control. Beam tracking with a root-mean-squared accuracy of 30nrad has been laboratory-confirmed.
|Document Type:||Conference or Workshop Item (Poster)|
|Title:||Sub-µrad Laser Beam Tracking|
|Journal or Publication Title:||Proceedings of SPIE Europe: Optics/Photonics in Security and Defence 2006|
|In ISI Web of Science:||No|
|Keywords:||beam steering, laser beam tracking, spatial light modulators, closed-loop control|
|Event Title:||SPIE Europe: Optics/Photonics in Security and Defence 2006|
|Event Location:||Stockholm, Sweden|
|Event Type:||international Conference|
|Event Dates:||2006-09-11 - 2006-09-14|
|HGF - Research field:||Aeronautics, Space and Transport (old)|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||Aircraft Research|
|DLR - Research area:||Aeronautics|
|DLR - Program:||L AR - Aircraft Research|
|DLR - Research theme (Project):||L - Laser Research and Technology|
|Institutes and Institutions:||Institute of Technical Physics|
|Deposited By:||Dr.-Ing. Ivo Buske|
|Deposited On:||12 Oct 2006|
|Last Modified:||14 Jan 2010 23:20|
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