Abstract

A spectrograph using an image orthicon tube for low light level spectroscopy has been constructed. It has been tested for rapid raman spectroscopy and, with computer control, for transient absorption spectra of ions excited to metastable states. The advantages and disadvantages of the instrument are discussed.

© 1971 Optical Society of America

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References

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  1. S. A. Johnson, Ph.D. Thesis, Stanford University (1971) (unpublished).
  2. Purchased from Teltron, Incorporated, Pottstown, Pa. 19464, for use with their orthicon tubes.
  3. T. Kushida, J. Phys. Soc. Japan 21, 1331 (1966).
    [CrossRef]
  4. M. C. Tobin, Appl. Opt. 9, 502 (1970).
    [CrossRef] [PubMed]
  5. M. Delhaye, Appl. Opt. 7, 2195 (1968).
    [CrossRef] [PubMed]

1970 (1)

1968 (1)

1966 (1)

T. Kushida, J. Phys. Soc. Japan 21, 1331 (1966).
[CrossRef]

Delhaye, M.

Johnson, S. A.

S. A. Johnson, Ph.D. Thesis, Stanford University (1971) (unpublished).

Kushida, T.

T. Kushida, J. Phys. Soc. Japan 21, 1331 (1966).
[CrossRef]

Tobin, M. C.

Appl. Opt. (2)

J. Phys. Soc. Japan (1)

T. Kushida, J. Phys. Soc. Japan 21, 1331 (1966).
[CrossRef]

Other (2)

S. A. Johnson, Ph.D. Thesis, Stanford University (1971) (unpublished).

Purchased from Teltron, Incorporated, Pottstown, Pa. 19464, for use with their orthicon tubes.

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Figures (4)

Fig. 1
Fig. 1

Spectrograph.

Fig. 2
Fig. 2

Image orthicon spectrograph apparatus for excited state absorption measurements.

Fig. 3
Fig. 3

Excited state data for MgO: Cr3+ at −120°C measured in two runs on the image orthicon spectrograph. The data show the difference between the excited and ground state absorption coefficients. Predicted excited state levels are shown.

Fig. 4
Fig. 4

Raman apparatus and measured spectra.

Equations (3)

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ln [ I unpumped / I pump ( t 1 ) ] = n 2 ( σ 2 - σ 1 ) ,
ln [ I unpumped / I pump ( t 1 ) ] = n 2 ( σ 2 - σ 1 ) + n c σ c ,
ln [ I pump ( t 2 ) / I pump ( t 1 ) ] = n 2 ( σ 2 - σ 1 ) .

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