Abstract

We describe a single beam device that records continuously as a function of wavelength, simple quantities related to the reflectance and transmittance, (1 − R)/(1 + R) and (1 − T)/(1 + T). The unit is easily attached to any spectrometer. It is sensitive to changes in these quantities of about 1 × 10−4, while systematic errors in alignment set an absolute accuracy of about 1 × 10−3.

© 1968 Optical Society of America

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References

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  1. H. E. Bennett, W. F. Koehler, J. Opt. Soc. Amer. 50,1, 1960.
    [CrossRef]
  2. U. Gerhardt, James Franck Institute, Chicago (private communication).
  3. D. Beaglehole, W. F. Tseng., Bull. Am. Phys. Soc. Ser. II, 13, 388, 1968.

1968 (1)

D. Beaglehole, W. F. Tseng., Bull. Am. Phys. Soc. Ser. II, 13, 388, 1968.

1960 (1)

H. E. Bennett, W. F. Koehler, J. Opt. Soc. Amer. 50,1, 1960.
[CrossRef]

Beaglehole, D.

D. Beaglehole, W. F. Tseng., Bull. Am. Phys. Soc. Ser. II, 13, 388, 1968.

Bennett, H. E.

H. E. Bennett, W. F. Koehler, J. Opt. Soc. Amer. 50,1, 1960.
[CrossRef]

Gerhardt, U.

U. Gerhardt, James Franck Institute, Chicago (private communication).

Koehler, W. F.

H. E. Bennett, W. F. Koehler, J. Opt. Soc. Amer. 50,1, 1960.
[CrossRef]

Tseng, W. F.

D. Beaglehole, W. F. Tseng., Bull. Am. Phys. Soc. Ser. II, 13, 388, 1968.

Bull. Am. Phys. Soc. Ser. II (1)

D. Beaglehole, W. F. Tseng., Bull. Am. Phys. Soc. Ser. II, 13, 388, 1968.

J. Opt. Soc. Amer. (1)

H. E. Bennett, W. F. Koehler, J. Opt. Soc. Amer. 50,1, 1960.
[CrossRef]

Other (1)

U. Gerhardt, James Franck Institute, Chicago (private communication).

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Figures (2)

Fig. 1
Fig. 1

(a) Shows the optical arrangement, (b) the sample mount, and (c) the intensity as function of time reaching the detector.

Fig. 2
Fig. 2

(a) is the circuit used to control the average photomultiplier current to 10 μA, while (b) is the arrangement for the self-balancing potentiometer with ratio read out.

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