Abstract

When voltage is applied to a basal section of uniaxial crystal of the type XH<sub>2</sub>PO<sub>4,</sub> the crystal becomes biaxial. Between crossed polarizers it can be considered, then, to act as a light valve. The angular field of view is limited by the natural retardation of the crystal. This paper discusses methods by which this natural retardation can be minimized or effectively canceled so that the retardation with no voltage is essentially zero over a large angular field. In the first method a basal section of uniaxial crystal of opposite sign is placed in series with the slab to be excited. Another technique uses two slabs of similar crystal with a 90-degree optical rotator placed between them. Both these techniques are treated theoretically and experimental measurements are given to show the resulting angular polarization pattern. This pattern is shown both for the electrically excited case and the unexcited case.

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  1. Bruce H. Billings, J. Opt. Soc. Am. 39, 797–801 (1949).
  2. Bruce H. Billings, J. Opt. Soc. Am. 39, 802–808 (1949).
  3. Robert O'B. Carpenter, J. Opt. Soc. Am. 40, 225–229 (1950).
  4. Made by the Brush Development Company, Cleveland, Ohio, under the trademark "PN." 12
  5. B. H. Billings and E. H. Land, J. Opt. Soc. Am. 38, 819–829 (1948).
  6. Carl Wiley, Goodyear Aircraft Company, Akron, Ohio (personal communication).
  7. Hans G. Baerwald, Brush Development Company, Cleveland, Ohio (personal communication).

Baerwald, Hans G.

Hans G. Baerwald, Brush Development Company, Cleveland, Ohio (personal communication).

Billings, B. H.

B. H. Billings and E. H. Land, J. Opt. Soc. Am. 38, 819–829 (1948).

Billings, Bruce H.

Bruce H. Billings, J. Opt. Soc. Am. 39, 802–808 (1949).

Bruce H. Billings, J. Opt. Soc. Am. 39, 797–801 (1949).

Carpenter, Robert O’B.

Robert O'B. Carpenter, J. Opt. Soc. Am. 40, 225–229 (1950).

Land, E. H.

B. H. Billings and E. H. Land, J. Opt. Soc. Am. 38, 819–829 (1948).

Wiley, Carl

Carl Wiley, Goodyear Aircraft Company, Akron, Ohio (personal communication).

Other (7)

Bruce H. Billings, J. Opt. Soc. Am. 39, 797–801 (1949).

Bruce H. Billings, J. Opt. Soc. Am. 39, 802–808 (1949).

Robert O'B. Carpenter, J. Opt. Soc. Am. 40, 225–229 (1950).

Made by the Brush Development Company, Cleveland, Ohio, under the trademark "PN." 12

B. H. Billings and E. H. Land, J. Opt. Soc. Am. 38, 819–829 (1948).

Carl Wiley, Goodyear Aircraft Company, Akron, Ohio (personal communication).

Hans G. Baerwald, Brush Development Company, Cleveland, Ohio (personal communication).

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