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Proceedings Paper

Computerized laser wavefront alignment with aberration correction using a speckle-based phase retrieval method
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Paper Abstract

Complete laser wavefront, with phase and intensity, is digitally reconstructed using a speckle-based phase retrieval method. An automated technique for the full characterization of a laser beam focus and the correction for astigmatism due to lens rotational misalignment is presented. The technique is also demonstrated in the corrections for illumination beam tilt and lens defocus in the imaging of the high spatial frequency content in phase objects. The proposed wavefront alignment technique is fast, precise and robust against aberrations.

Paper Details

Date Published: 31 August 2009
PDF: 6 pages
Proc. SPIE 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, 73824W (31 August 2009); doi: 10.1117/12.835294
Show Author Affiliations
Percival F. Almoro, Technical Univ. of Denmark (Denmark)
Steen Grüner Hanson, Technical Univ. of Denmark (Denmark)


Published in SPIE Proceedings Vol. 7382:
International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging
Farzin Amzajerdian; Chun-qing Gao; Tian-yu Xie, Editor(s)

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