Nulling interferometric beam combiner utilizing dielectric plates: Experimental results in the visible broadband

R. M. Morgan, J. Burge, N. Woolf

Research output: Contribution to journalConference article

20 Scopus citations

Abstract

A laboratory experiment was performed on the achromatic nulling in the visible to SIM requirements. The experiment employed phase shifting interferometry techniques on a spectrally-dispersed fringe to measure the phase as a function of wavelength. The phase was then used by a control system which adjusts the tilt of the plates and the air path difference until a satisfactory level of the null was achieved. A fast servo adjusted the air path difference to stabilize the phase to the nanometer level. The design issue and the experimental measure of phase versus wavelength are discussed. A description of the control system and a preliminary measure of the null are presented.

Original languageEnglish (US)
Pages (from-to)340-348
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4006 (I)
DOIs
StatePublished - 2000
EventInterferometry in Optical Astronomy - Munich, Ger
Duration: Mar 27 2000Mar 29 2000

ASJC Scopus subject areas

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

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