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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 39, Iss. 4 — Apr. 1, 1949
  • pp: 265–270

Optics InfoBase > JOSA > Volume 39 > Issue 4 > The Correction of Slit-Width Errors

The Correction of Slit-Width Errors

ARTHUR C. HARDY and F. MANSFIELD YOUNG  »View Author Affiliations

JOSA, Vol. 39, Issue 4, pp. 265-270 (1949)

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The original purpose of this investigation was to explore the possibility of providing a spectrophotometer with automatic means for correcting the error that results when a continuous source is used with a monochromator having slits of finite width. In connection therewith, it was necessary to make what appears to be the first rigorous analysis of slit-width errors. The results of this analysis can be applied to the experimental determination of any functional relationship when the size of the “probe” is significant.

ARTHUR C. HARDY and F. MANSFIELD YOUNG, "The Correction of Slit-Width Errors," J. Opt. Soc. Am. 39, 265-270 (1949)

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  1. Lord Rayleigh, Phil. Mag. 42, 441 (1871).
  2. C. Runge, Zeits. Math. 42, 205 (1897).
  3. F. Paschen, Wied. Ann. 60, 712 (1897).
  4. E. P. Hyde, Astrophys. J. 35, 237 (1912).
  5. It goes without saying that the theory developed here can be applied to measurements of spectral reflectance by replacing t(λ) by r(λ) and T(y) by R(y).
  6. R. H. Cameron, Nat. Math. Mag. 15, 331 (1941).
  7. According to the convention used here, the Fourier Transform, { }, of a function ƒ(y) is {ƒ(y)} = 1/(2π)eiωyƒ(y)dy.
  8. J. A. Van den Akker, J. Opt. Soc, Am. 33, 257 (1943).
  9. This does not apply if any of the functions has a structure that is fine by comparison with the width of the slit. In that case, the above solution does not converge.
  10. Arthur C. Hardy, J. Opt. Soc. Am. 25, 305 (1935).
  11. For details, see Bachelor's Thesis of F. Mansfield Young, M.I.T., May, 1948.

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