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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 59, Iss. 10 — Oct. 1, 1969
  • pp: 1285–1287

Optimum Illumination Geometry for Laser Raman Spectroscopy

R. L. SCHWIESOW  »View Author Affiliations


JOSA, Vol. 59, Issue 10, pp. 1285-1287 (1969)
http://dx.doi.org/10.1364/JOSA.59.001285


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Abstract

A focal-length-to-aperture ratio (F/D) for the illuminating laser beam in a scattering experiment where the scattered light is collected at right angles to the laser beam has been determined. This ratio allows a maximum amount of scattered light to be collected and depends on illuminating wave number v= 1/λ, spectrograph slit height h and width w, and collecting-optics magnification M. M should be as large as practical. If (vh/14M)1/2 is less than (1/7) (h/w), the value of F/D for maximum collected scattered flux is (vh/14M)1/2. If (vh/14M)1/2 is greater than (1/7) (h/w), the collected scattered flux is maximum and constant for F/D over the range (vh/14M)1/2 to vw/2M.

Citation
R. L. SCHWIESOW, "Optimum Illumination Geometry for Laser Raman Spectroscopy," J. Opt. Soc. Am. 59, 1285-1287 (1969)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-59-10-1285

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