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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 68, Iss. 9 — Sep. 1, 1978
  • pp: 1206–1210

Rigorous diffraction theory for transmission phase gratings with deep rectangular grooves

K. Knop  »View Author Affiliations

JOSA, Vol. 68, Issue 9, pp. 1206-1210 (1978)

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The diffraction of light by deep rectangular-groove transmission phase gratings is treated by solving Maxwell’s equations numerically. Results are given for the light diffracted into the zero order by gratings with grating constants d in the range λ < d < 5λ, aspect ratio b (= linewidth/d), 0 < b < 1, and grating depths a < 5λ, assuming a refractive index n0 = 1.5. Such gratings are used in practice as a dye-free replacement for color filters. They offer a new way of storing pictorial information in small format for read out in conventional projectors.

© 1978 Optical Society of America

K. Knop, "Rigorous diffraction theory for transmission phase gratings with deep rectangular grooves," J. Opt. Soc. Am. 68, 1206-1210 (1978)

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  1. R. Petit, "Electromagnetic Grating Theories: Limitations and Successes," Nouv. Rev. Opt. 6, 129–135 (1975).
  2. M. T. Gale, J. Kane, and K. Knop, "ZOD Images: Embossable Surface-Relief Structures for Color and Black-and-White Reproduction," J. Appl. Phot. Eng. 4, 41–47 (1978).
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