Low uncertainty alignment procedure using computer generated holograms

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

We characterize the precision of a low uncertainty alignment procedure that uses computer generated holograms as center references to align optics in tilt and centration. This procedure was developed for the alignment of the Wide Field Corrector for the Hobby Eberly Telescope, which uses center references to provide the data for the system alignment. From previous experiments, we determined that using an alignment telescope or similar instrument would not achieve the required alignment uncertainty. We developed a new procedure that utilizes computer generated holograms to create multiple simultaneous images to perform the alignment. The center references are phase etched Fresnel zone plates that act like thin lenses. We use zero order reflections to measure tilt and first order imaging from the zone plates to measure centration. We performed multiple alignments with a prototype system consisting of two center references spaced one meter apart to characterize this method's performance. We scale the uncertainties for the prototype experiment to determine the expected alignment errors in the Wide Field Corrector.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume8131
DOIs
StatePublished - 2011
EventOptical System Alignment, Tolerancing, and Verification V - San Diego, CA, United States
Duration: Aug 21 2011Aug 22 2011

Other

OtherOptical System Alignment, Tolerancing, and Verification V
CountryUnited States
CitySan Diego, CA
Period8/21/118/22/11

Fingerprint

Hologram
Holograms
Alignment
alignment
Uncertainty
Corrector
Wide-field
Tilt
Telescopes
Hobby-Eberly Telescope
prototypes
telescopes
Prototype
Experiment
Lens
Telescope
Optics
Lenses
Experiments
lenses

Keywords

  • Alignment datum
  • Computer generated hologram
  • Fresnel zone plate
  • Hobby Eberly Telescope
  • Optical alignment
  • Wide Field Corrector

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Coyle, L. E., Dubin, M. B., & Burge, J. H. (2011). Low uncertainty alignment procedure using computer generated holograms. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8131). [81310B] https://doi.org/10.1117/12.895237

Low uncertainty alignment procedure using computer generated holograms. / Coyle, L. E.; Dubin, Matthew B; Burge, James H.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8131 2011. 81310B.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Coyle, LE, Dubin, MB & Burge, JH 2011, Low uncertainty alignment procedure using computer generated holograms. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 8131, 81310B, Optical System Alignment, Tolerancing, and Verification V, San Diego, CA, United States, 8/21/11. https://doi.org/10.1117/12.895237
Coyle LE, Dubin MB, Burge JH. Low uncertainty alignment procedure using computer generated holograms. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8131. 2011. 81310B https://doi.org/10.1117/12.895237
Coyle, L. E. ; Dubin, Matthew B ; Burge, James H. / Low uncertainty alignment procedure using computer generated holograms. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8131 2011.
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