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

Percival F. Almoro; Steen Grüner Hanson

doi:10.1117/12.835294

31 August 2009 Computerized laser wavefront alignment with aberration correction using a speckle-based phase retrieval method

Percival F. Almoro, Steen Grüner Hanson

Author Affiliations +

Proceedings Volume 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging; 73824W (2009) https://doi.org/10.1117/12.835294
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

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.

Citation Download Citation

Percival F. Almoro and Steen Grüner Hanson "Computerized laser wavefront alignment with aberration correction using a speckle-based phase retrieval method", Proc. SPIE 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, 73824W (31 August 2009); https://doi.org/10.1117/12.835294

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