Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Algorithm for resolving 2 pi ambiguities in interferometric measurements by use of multiple wavelengths
KTH, Superseded Departments, Numerical Analysis and Computer Science, NADA.
2001 (English)In: Optical Engineering: The Journal of SPIE, ISSN 0091-3286, Vol. 40, no 6, 984-990 p.Article in journal (Refereed) Published
Abstract [en]

Measurement of differences in optical path length in monochromatic light with any interferometric method is insensitive to errors that are whole numbers of waves. If measurements are performed in several wavelengths, this ambiguity can be resolved. We present a general algorithm for finding the correct distance post facto, given multiple measurements in different wavelengths. Applied to piston measurements of a segmented mirror, the capture range of a wavefront sensor can be extended from +/- half a wave to several waves. The extended capture range can be calculated and depends on the selection of wavelengths used for measurements and the expected accuracy of the method used.

Place, publisher, year, edition, pages
2001. Vol. 40, no 6, 984-990 p.
Keyword [en]
optical path length, interferometric measurements, multiple wavelengths, monochromatic light, band phasing algorithm, mirror segments, keck telescopes
Identifiers
URN: urn:nbn:se:kth:diva-20759ISI: 000169701600014OAI: oai:DiVA.org:kth-20759DiVA: diva2:339456
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

Open Access in DiVA

No full text

Search in DiVA

By author/editor
Eriksson, Henrik
By organisation
Numerical Analysis and Computer Science, NADA
In the same journal
Optical Engineering: The Journal of SPIE

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 24 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf