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Sub-µrad Laser Beam Tracking

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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Abstract

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
Authors:
AuthorsInstitution or Email of Authors
Buske, IvoUNSPECIFIED
Riede, WolfgangUNSPECIFIED
Date:August 2006
Journal or Publication Title:Proceedings of SPIE Europe: Optics/Photonics in Security and Defence 2006
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
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
Organizer:SPIE
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
Location: Stuttgart
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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