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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 61, Iss. 8 — Aug. 1, 1971
  • pp: 1015–1022

Practical Solutions of the Lock-In Detection Problem for Lorentz and Dispersion Resonance Signals

R. LOWELL SMITH  »View Author Affiliations


JOSA, Vol. 61, Issue 8, pp. 1015-1022 (1971)
http://dx.doi.org/10.1364/JOSA.61.001015


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Abstract

The problem of determining the parameters of a resonance signal from observations of the output of a lock-in detector is considered for the cases in which the resonance has a Lorentz or dispersion line shape. Computer techniques are applied to the more general superimposed line-shape problem accommodating modulation broadening, time-constant distortion, and the effects of multiple overlapping components. Analytical expressions are obtained for several special cases.

Citation
R. LOWELL SMITH, "Practical Solutions of the Lock-In Detection Problem for Lorentz and Dispersion Resonance Signals," J. Opt. Soc. Am. 61, 1015-1022 (1971)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-61-8-1015


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References

  1. H. Wahlquist, J. Chem. Phys. 35, 1708 (1961).
  2. R. C. Isler, J. Opt. Soc. Am. 59, 727 (1969).
  3. R. Lowell Smith and T. G. Eck, Phys. Rev. A 2, 2179 (1970).
  4. R. Lowell Smith, Ph.D. thesis, Case Western Reserve University, 1970 (University Microfilms publication number 71–19,057).
  5. P. A. Franken, Phys. Rev. 121, 508 (1961).
  6. M. E. Rose and R. L. Carovillano, Phys. Rev. 122, 1185 (1961).
  7. M. W. P. Strandberg, H. R. Johnson, and J. R. Eshbach, Rev. Sci. Instr. 25, 776 (1954).
  8. P. R. Bevington, Data Reduction and Error Analysis for the Physical Sciences (McGraw—Hill, New York, 1969).
  9. Prototype programs incorporating both the power-series and integral methods are available from the author on request. These are presented, for simplicity, without the elaborations discussed above, but nonetheless are powerful tools for the interpretation of resonance signals under lock-in detection. Each program is roughly 100 Fortran statements in length and requires one somewhat shorter subroutine.

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