OSA's Digital Library

Applied Optics

Applied Optics


  • Vol. 9, Iss. 3 — Mar. 1, 1970
  • pp: 737–741

Spectral Line Interferometry: a Proposed Means of Selectively Measuring the Change in the Density of a Specific Atomic Population

R. M. Measures  »View Author Affiliations

Applied Optics, Vol. 9, Issue 3, pp. 737-741 (1970)

View Full Text Article

Enhanced HTML    Acrobat PDF (503 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



An extension of the two-wavelength interferogram technique is proposed that will enable selective measurements to be made of the variation in the density of a specific atomic population. One wavelength should be chosen to closely coincide with the wavelength associated with an absorption line of the species of interest, whereas the other wavelength should be displaced by several angstroms from the line. The difference between the fringe shifts on the two interferograms would then enable the density variation of the specific atomic population of interest to be measured with high sensitivity. Two criteria are established that ascertain for any system the minimum density that could be detected, and the range in density variation for which the interferograms should be discernible.

© 1970 Optical Society of America

Original Manuscript: August 29, 1969
Published: March 1, 1970

R. M. Measures, "Spectral Line Interferometry: a Proposed Means of Selectively Measuring the Change in the Density of a Specific Atomic Population," Appl. Opt. 9, 737-741 (1970)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. R. A. Alpher, R. White, Phys. Fluids 2, 111 (1959).
  2. H. Samelson, Electronics 41, 142 (1968).
  3. M. D. Martin, E. L. Thomas, Phys. Lett. 25A, 637 (1967).
  4. K. E. Harnwell, R. O. Jahn, Phys. Fluids 7, 214 (1964). [CrossRef]
  5. A. K. Belozerov, R. M. Measures, J. Fluid Mech. 36, 695 (1969). [CrossRef]
  6. R. W. Ditchburn, Light (John Wiley & Sons, New York, 1963).
  7. L. H. Aller, Astrophysics: Atmosphere of the Sun and Stars (Ronald Press, New York, 1963).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


Fig. 1 Fig. 2 Fig. 3
Fig. 4

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited