
Proceedings Paper
Steerable diffraction limited line illumination system using deformable mirrorFormat | Member Price | Non-Member Price |
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Paper Abstract
Many scientific and industrial applications often require high performance optical systems utilizing spatially shaped
illumination patterns of laser beams. Precisely shaped line illumination can be used for various line scanning systems or
surface inspection devices. In order to achieve the highest resolution or superior signal to noise ratio limited by the
fundamental theory, a diffraction limited illumination optical system (e.g. <0.8 Strehl ratio) gives the narrowest
illumination line width determined by the system’s NA (Numerical Aperture) value. For high precision and in-factory
industrial applications, the Diffraction Limited Line Illumination (DLLI) needs to be controlled in three dimensional
space rapidly as the target object under the illumination may not be always aligned with respect to the illumination
system. A steerable DLLI system with three degrees of freedom (i.e. axial displacement, rotation, and tilt) is developed
using an adaptive optics system. By electronically controlling the Zernike based surface shapes of the deformable mirror,
the DLLI in free space is actively positioned and oriented with high accuracy. The geometrical optics based
mathematical model to control the Zernike modes of the deformable mirror and the performance of a bench-top proof-ofconcept
system will be presented with experimental data and analysis results.
Paper Details
Date Published: 28 September 2013
PDF: 7 pages
Proc. SPIE 8843, Laser Beam Shaping XIV, 88430A (28 September 2013); doi: 10.1117/12.2023431
Published in SPIE Proceedings Vol. 8843:
Laser Beam Shaping XIV
Andrew Forbes; Todd E. Lizotte, Editor(s)
PDF: 7 pages
Proc. SPIE 8843, Laser Beam Shaping XIV, 88430A (28 September 2013); doi: 10.1117/12.2023431
Show Author Affiliations
Koichi Taniguchi, Hitachi High-Technologies Corp. (Japan)
Dae Wook Kim, College of Optical Sciences, The Univ. of Arizona (United States)
Dae Wook Kim, College of Optical Sciences, The Univ. of Arizona (United States)
Kei Shimura, Hitachi High Technologies Corp. (Japan)
James H. Burge, College of Optical Sciences, The Univ. of Arizona (United States)
James H. Burge, College of Optical Sciences, The Univ. of Arizona (United States)
Published in SPIE Proceedings Vol. 8843:
Laser Beam Shaping XIV
Andrew Forbes; Todd E. Lizotte, Editor(s)
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