Abstract

The construction of a new automatic retardation meter with an ADP polarization modulator and some results obtained with the apparatus are reported. An ADP solid Kerr cell which is subjected to an alternating voltage is inserted in an optical system which measures birefringence, and the retardation of a test piece is modulated. The modulated signal is amplified and fed to a servomotor, which controls the retardation compensation to get extinction. The retardation of the test piece is obtained from the amount of compensation. A practical apparatus, which is suited to study the characteristics of fibers, is made, and the effects of heat treatment and recrystallization of some synthetic fibers are measured.

© 1964 Optical Society of America

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References

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  1. L. R. G. Treloar, The Physics of Rubber Elasticity (Oxford Univ. Press, Oxford, 1949).
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    [CrossRef]
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  16. K. Fushimi, Bull. Electro-Tech. Lab. Japan, No. 602 (1962).
  17. Y. Wachi, Oyo Butsuri 27, 670 (1958).
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  21. Y. Fujimura, T. Ogawa, Oyo Butsuri 26, 520 (1957).

1963 (1)

1962 (1)

1961 (3)

1958 (2)

Y. Wachi, Oyo Butsuri 27, 670 (1958).

Y. Fujisawa, Oyo Butsuri 27, 657 (1958).

1957 (3)

S. Namba, T. Ogawa, Oyo Butsuri 26, 498 (1957).

Y. Fujimura, T. Ogawa, Oyo Butsuri 26, 509 (1957).

Y. Fujimura, T. Ogawa, Oyo Butsuri 26, 520 (1957).

1952 (1)

1950 (1)

1949 (3)

1948 (3)

A. V. Tobolsky, R. S. Stein, Textile Res. J. 18, 201 (1948).
[CrossRef]

A. V. Tobolsky, R. S. Stein, Textile Res. J. 18, 302 (1948).
[CrossRef]

R. C. Günter, J. Opt. Soc. Am. 38, 419 (1948).
[CrossRef]

1947 (1)

Billings, B. H.

Carpenter, R. O’B.

Fujimura, Y.

Y. Fujimura, T. Ogawa, Oyo Butsuri 26, 509 (1957).

Y. Fujimura, T. Ogawa, Oyo Butsuri 26, 520 (1957).

Fujisawa, Y.

Y. Fujisawa, Oyo Butsuri 27, 657 (1958).

Fushimi, K.

K. Fushimi, Bull. Electro-Tech. Lab. Japan, No. 602 (1962).

Günter, R. C.

Krimm, S.

A. V. Tobolsky, R. S. Stein, S. Krimm, Textile Res. J. 19, 8 (1949).
[CrossRef]

Nagano, Y.

Namba, S.

S. Namba, T. Ogawa, Oyo Butsuri 26, 498 (1957).

Ogawa, T.

S. Namba, T. Ogawa, Oyo Butsuri 26, 498 (1957).

Y. Fujimura, T. Ogawa, Oyo Butsuri 26, 520 (1957).

Y. Fujimura, T. Ogawa, Oyo Butsuri 26, 509 (1957).

Shimodaira, T.

Stein, R. S.

A. V. Tobolsky, R. S. Stein, S. Krimm, Textile Res. J. 19, 8 (1949).
[CrossRef]

A. V. Tobolsky, R. S. Stein, Textile Res. J. 18, 302 (1948).
[CrossRef]

A. V. Tobolsky, R. S. Stein, Textile Res. J. 18, 201 (1948).
[CrossRef]

Takasaki, H.

Tobolsky, A. V.

A. V. Tobolsky, R. S. Stein, S. Krimm, Textile Res. J. 19, 8 (1949).
[CrossRef]

A. V. Tobolsky, R. S. Stein, Textile Res. J. 18, 302 (1948).
[CrossRef]

A. V. Tobolsky, R. S. Stein, Textile Res. J. 18, 201 (1948).
[CrossRef]

Treloar, L. R. G.

L. R. G. Treloar, The Physics of Rubber Elasticity (Oxford Univ. Press, Oxford, 1949).

Wachi, Y.

Y. Wachi, Oyo Butsuri 27, 670 (1958).

J. Opt. Soc. Am. (11)

Oyo Butsuri (5)

Y. Wachi, Oyo Butsuri 27, 670 (1958).

Y. Fujisawa, Oyo Butsuri 27, 657 (1958).

S. Namba, T. Ogawa, Oyo Butsuri 26, 498 (1957).

Y. Fujimura, T. Ogawa, Oyo Butsuri 26, 509 (1957).

Y. Fujimura, T. Ogawa, Oyo Butsuri 26, 520 (1957).

Textile Res. J. (3)

A. V. Tobolsky, R. S. Stein, Textile Res. J. 18, 201 (1948).
[CrossRef]

A. V. Tobolsky, R. S. Stein, Textile Res. J. 18, 302 (1948).
[CrossRef]

A. V. Tobolsky, R. S. Stein, S. Krimm, Textile Res. J. 19, 8 (1949).
[CrossRef]

Other (2)

L. R. G. Treloar, The Physics of Rubber Elasticity (Oxford Univ. Press, Oxford, 1949).

K. Fushimi, Bull. Electro-Tech. Lab. Japan, No. 602 (1962).

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Figures (10)

Fig. 1
Fig. 1

The electrooptical characteristics of ADP crystal.

Fig. 2
Fig. 2

Conoscopic patterns of ADP. (a) Without electric field; (b) +9.6 kV; (c) −9.6kV.

Fig. 3
Fig. 3

The light transmittance with a retardation plate between a pair of crossed polarizers and the relationship between retardation modulation and error signal.

Fig. 4
Fig. 4

General view of a tentative apparatus which measures birefringence of a test piece by direct compensation.

Fig. 5
Fig. 5

The optical arrangement and state of polarization of a retardation meter of Sénarmont type.

Fig. 6
Fig. 6

Schematic diagram of an automatic retardation meter.

Fig. 7
Fig. 7

General view of a practical retardation meter, together with thermocontroller and recorder.

Fig. 8
Fig. 8

The test piece stage and the electric oven of the retardation meter.

Fig. 9
Fig. 9

Temperature–retardation characteristics of commercial polyester film “Mylar”.

Fig. 10
Fig. 10

Temperature–retardation characteristics of the drawn P.E.T. film.

Equations (1)

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I = 1 4 ( 1 cos 2 π Δ ) I 0 ,

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