Abstract

The slit function of a double monochromator has been studied using a dye laser and a few ion laser lines. The value of the slit function is about 9 orders of magnitude below the peak at 300 nm from the line center. The difference between the slit function obtained by the monochromator scanning over a fixed spectral line and that obtained by tuning a spectral line through a fixed monochromator setting is found to be negligible for all but the most demanding applications. Also reported is a prominent structure in the slit function which is attributed to the intermediate slit of the instrument.

© 1986 Optical Society of America

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References

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  1. Identification of commercial equipment to specify adequately the experimental problem does not imply recommendation or endorsement by the National Bureau of Standards or does it imply that the equipment identified is necessarily the best available for the purpose.
  2. R. D. Saunders, J. B. Shumaker, “Automated Radiometric Linearity Tester,” Appl. Opt. 23, 3504 (1984).
    [CrossRef] [PubMed]
  3. H. J. Kostkowski, “The Relative Spectral Responsivity and Slit-Scattering Function of a Spectroradiometer,” in Self-Study Manual on Optical Radiation Measurements, Natl. Bur. Stand. U.S. Tech. Note 910–4 (June1979), Chap. 7, pp 2–34.

1984 (1)

Kostkowski, H. J.

H. J. Kostkowski, “The Relative Spectral Responsivity and Slit-Scattering Function of a Spectroradiometer,” in Self-Study Manual on Optical Radiation Measurements, Natl. Bur. Stand. U.S. Tech. Note 910–4 (June1979), Chap. 7, pp 2–34.

Saunders, R. D.

Shumaker, J. B.

Appl. Opt. (1)

Other (2)

Identification of commercial equipment to specify adequately the experimental problem does not imply recommendation or endorsement by the National Bureau of Standards or does it imply that the equipment identified is necessarily the best available for the purpose.

H. J. Kostkowski, “The Relative Spectral Responsivity and Slit-Scattering Function of a Spectroradiometer,” in Self-Study Manual on Optical Radiation Measurements, Natl. Bur. Stand. U.S. Tech. Note 910–4 (June1979), Chap. 7, pp 2–34.

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Figures (11)

Fig. 1
Fig. 1

Schematic of prism-grating double monochromator: Entrance, intermediate, and exit slits, S1, S2, and S3; prism, P; grating, G; and spherical mirrors, M.

Fig. 2
Fig. 2

Slit-scattering function at 592.8 nm for 0.6-mm slits. The solid line connects measurements taken by scanning the monochromator over a dye laser line at 592.8 nm. The dots are measurements taken at different dye laser wavelengths with the monochromator fixed at 592.8 nm.

Fig. 3
Fig. 3

Slit-scattering function for Fig. 2 plotted logarithmically.

Fig. 4
Fig. 4

Slit-scattering function at 562.8 nm for 0.6-mm slits. The solid line connects measurements taken by scanning the monochromator over a dye laser line at 562.8 nm. The dots are measurements taken at different dye laser wavelengths with the monochromator fixed at 562.8 nm.

Fig. 5
Fig. 5

Slit-scattering function as in Fig. 4 but at 622.8 nm.

Fig. 6
Fig. 6

Slit-scattering function at 530.9 nm for 0.6-mm slits. The solid line connects measurements taken by scanning the monochromator over the 530.9-nm krypton-ion laser line. The dots are dye laser and ion laser line measurements taken with the monochromator set at 530.9 nm.

Fig. 7
Fig. 7

Slit-scattering function as in Fig. 6 but at 568.2 nm.

Fig. 8
Fig. 8

Slit-scattering function as in Fig. 6 but at 647.1 nm. The broken line is the left-right reflection of the solid line profile ~647.1 nm.

Fig. 9
Fig. 9

Slit-scattering functions obtained by scanning the monochromator over argon- and krypton-ion laser lines at 488.0, 514.5, 530.9, 568.2, 647.1, and 676.4 nm. Slit width setting, 0.6 mm.

Fig. 10
Fig. 10

Slit-scattering functions obtained by scanning the monochromator over the 647.1-nm krypton-ion laser line for slit width settings of 0.1, 0.6, and 3.0 mm.

Fig. 11
Fig. 11

Slit-scattering functions of Fig. 10 plotted logarithmically.

Equations (7)

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S M ( λ 0 , λ ; t ) = L λ ( λ , λ ; t ) · R ( λ 0 , λ ) · d λ .
L λ ( λ , λ ; t ) = L λ 0 ( λ ; t ) · δ ( λ - λ ) .
S M ( λ 0 , λ ; t ) = L λ 0 ( λ ; t ) · R f ( λ ) · Z ( λ 0 , λ ) .
S D ( λ ; t ) = R D ( λ ) · L λ 0 ( λ ; t ) ,
Z ( λ 0 , λ ) = [ S M ( λ 0 , λ ; t ) / S D ( λ ; t ) ] · [ R D ( λ ) / R f ( λ ) ] .
M ( λ 0 , λ ) = S M ( λ 0 , λ ; t ) / S D ( λ ; t )
Z ( λ 0 , λ ) = M ( λ 0 , λ ) / M ( λ , λ )

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