Real-time phase-front detector for heterodyne interferometers

Felipe Guzmán Cervantes, Gerhard Heinzel, Antonio F.García Marín, Vinzenz Wand, Frank Steier, Oliver Jennrich, Karsten Danzmann

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


We present a real-time differential phase-front detector sensitive to better than 3 mrad rms, which corresponds to a precision of approximately 500 pm. This detector performs a spatially resolving measurement of the phase front of a heterodyne interferometer, with heterodyne frequencies up to approximately 10 kHz. This instrument was developed as part of the research for the Laser Interferometer Space Antenna Technology Package interferometer and will assist in the manufacture of its flight model. Because of the advantages this instrument offers, it also has general applications in optical metrology.

Original languageEnglish (US)
Pages (from-to)4541-4548
Number of pages8
JournalApplied optics
Issue number21
StatePublished - Jul 20 2007
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering


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