Abstract

Room temperature optical constants of plastic materials have been measured over the 50–350-cm−1 spectral range. The materials reported include high density polyethylene, TPX, Aclar, Kapton, Surlyn, and Mylar. All except TPX are available in sheet form and exhibit birefringence as a consequence of Stretching during the manufacturing process. Only the average of the two sets of optical constants is reported for each material. The refractive index was calculated from the channeled spectrum as observed in reflection from the sample, while the absorption coefficient was determined, in all cases but polyethylene, from a transmission measurement.

© 1975 Optical Society of America

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References

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  1. E. V. Loewenstein, D. R. Smith, Appl. Opt. 10, 577 (1971).
    [CrossRef] [PubMed]
  2. E. V. Loewenstein, D. R. Smith, R. L. Morgan, Appl. Opt. 12, 398 (1973).
    [CrossRef] [PubMed]
  3. G. W. Chantry, H. M. Evans, J. W. Fleming, H. A. Gebbie, Infrared Phys. 9, 31 (1969).
    [CrossRef]
  4. E. V. Loewenstein, A. Engelsrath, J. Phys. (Paris) C-2, Suppl. 3–4 28, 153 (1967).
    [CrossRef]
  5. C. Y. Liang, S. Krim, J. Chem. Phys. 25, 563 (1956).
    [CrossRef]

1973 (1)

1971 (1)

1969 (1)

G. W. Chantry, H. M. Evans, J. W. Fleming, H. A. Gebbie, Infrared Phys. 9, 31 (1969).
[CrossRef]

1967 (1)

E. V. Loewenstein, A. Engelsrath, J. Phys. (Paris) C-2, Suppl. 3–4 28, 153 (1967).
[CrossRef]

1956 (1)

C. Y. Liang, S. Krim, J. Chem. Phys. 25, 563 (1956).
[CrossRef]

Chantry, G. W.

G. W. Chantry, H. M. Evans, J. W. Fleming, H. A. Gebbie, Infrared Phys. 9, 31 (1969).
[CrossRef]

Engelsrath, A.

E. V. Loewenstein, A. Engelsrath, J. Phys. (Paris) C-2, Suppl. 3–4 28, 153 (1967).
[CrossRef]

Evans, H. M.

G. W. Chantry, H. M. Evans, J. W. Fleming, H. A. Gebbie, Infrared Phys. 9, 31 (1969).
[CrossRef]

Fleming, J. W.

G. W. Chantry, H. M. Evans, J. W. Fleming, H. A. Gebbie, Infrared Phys. 9, 31 (1969).
[CrossRef]

Gebbie, H. A.

G. W. Chantry, H. M. Evans, J. W. Fleming, H. A. Gebbie, Infrared Phys. 9, 31 (1969).
[CrossRef]

Krim, S.

C. Y. Liang, S. Krim, J. Chem. Phys. 25, 563 (1956).
[CrossRef]

Liang, C. Y.

C. Y. Liang, S. Krim, J. Chem. Phys. 25, 563 (1956).
[CrossRef]

Loewenstein, E. V.

Morgan, R. L.

Smith, D. R.

Appl. Opt. (2)

Infrared Phys. (1)

G. W. Chantry, H. M. Evans, J. W. Fleming, H. A. Gebbie, Infrared Phys. 9, 31 (1969).
[CrossRef]

J. Chem. Phys. (1)

C. Y. Liang, S. Krim, J. Chem. Phys. 25, 563 (1956).
[CrossRef]

J. Phys. (Paris) (1)

E. V. Loewenstein, A. Engelsrath, J. Phys. (Paris) C-2, Suppl. 3–4 28, 153 (1967).
[CrossRef]

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Figures (8)

Fig. 1
Fig. 1

Optical constants of polyethylene.

Fig. 2
Fig. 2

Optical constants of TPX.

Fig. 3
Fig. 3

Refractive index of CTFE (Aclar) and the difference nαnβ of the two accessible refractive indices.

Fig. 4
Fig. 4

Absorption coefficient of CTFE (midway between optic axes).

Fig. 5
Fig. 5

Refractive index of Kapton (polyimide). This is the average of the two accessible indices; see text.

Fig. 6
Fig. 6

Absorption coefficient of Kapton.

Fig. 7
Fig. 7

Refractive index of Surlyn.

Fig. 8
Fig. 8

Absorption coefficient of Surlyn. The encircled points were measured in transmission, the ×'s in reflection.

Tables (7)

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Table I Optical Constants of High Density Polyethylenea

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Table II Optical Constants of TPXa

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Table III Vibrational Frequencies of CTFE (Aclar)

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Table IV Optical Constants of CTFE (Aclar)a

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Table V Optical Constants of Kapton (Polyimide)a

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Table VI Optical Constants of Surlyna

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Table VII Optical Constants of Mylar (Polyethylene Terephthalate)a

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