Progress in absolute distance interferometry

Details Progress in absolute distance interferometry Progress in absolute distance interferometry

Publishing date

Oct 1982

URL

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982spie..332..368g&link_type=abstract

Journals

IN: International Conference on Advanced Technology Optical Telescopes, Tucson, AZ, March 11-13, 1982, Proceedings (A83-30976 13

Science

Physics

Field

Optics

Additional info 3

Carbon Dioxide Lasers, Laser Interferometry, Laser Range Finders, Michelson Interferometers, Two-Wavelength Lasers, Accuracy, Adaptive Optics, Breadboard Models, Diffraction Patterns, Frequency Stability, Infrared Lasers, Laser Stability, Noise Spectra, Quantum Electronics, Signal Processing, Switching Circuits, Telescopes

Type

Scientific paper

Abstract

This paper describes the results of recent research undertaken to examine the feasibility of employing laser interferometry to precisely measure absolute distance over extended ranges. Results are presented which show a resolution of 0.03 microns (RMS) for measurements over distances up to 10 meters. The technology developed for achieving these results is based on two-color synthetic Michelson interferometry employing a new CO2 laser source. Indeed, the new laser is the key element in this process: it was specifically designed to sequentially switch between four sets of stable R- and P-line pairs, and thereby provide a basis for forming simultaneous equations which were employed to greatly reduce the half-wavelength ambiguity typical of single wavelength inteferometers. Potential applications to future optical telescopes, particularly the large, multipanel telescopes under consideration for 10-15 years hence, affecting their initial alignment and control are suggested.

Affiliated with

Also associated with

No associations

Rating

Progress in absolute distance interferometry does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Progress in absolute distance interferometry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Progress in absolute distance interferometry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1032922