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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: |
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| 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 | ||||||
| HGF - Program: | Aeronautics | ||||||
| HGF - Program Themes: | L AR - 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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