Removal of bias and conjugate image using the modified conoscopic holography

변형된 코노스코픽 홀로그래피를 이용한 바이어스와 공액영상의 제거

Kim, Soo-Gil

  • Received : 2015.11.02
  • Accepted : 2015.11.25
  • Published : 2015.12.31


Conoscopic holography, which consists of two linear polarizers and two wave plates, and an uniaxial crystal, is incoherent holographic technology for three-dimensional display. In the uniaxial crystal, the wave from object divides into extraordinary and ordinary waves and phase difference between two waves is caused by the different refractive index of two waves. Four intensity patterns, which are made by phase difference, are obtained using LCLV(liquid crystal light valve) and conoscopic holography system. By combining four intensity patterns, the complex hologram without bias and conjugate image. In this paper, we propose the optimized system, which consists of a wave plate and a linear polarizer, and uniaxial crystal. In the proposed system, it doesn't need LCLV. By adjusting the azimuth angle of a linear polarizer and a wave plate, we derive four intensity patterns in recording plane. We demonstrate theoretically that the complex hologram with bias and a conjugate image is obtained using the proposed system.


Conoscopic Holography;Optimization;Uniaxial Crystal;Bias;Conjugate Image;Incoherent Holography


  1. D. Gabor, "A new microscopic principle," Nature, vol. 161, pp. 777-778, 1948.
  2. L. Mertz and N. O. Young, "Fresnel trasformation of optics," in Proceedings of the Conference on Optical Instruments and Techniques, K. J. Habell, ed. (Chapman & Hall, London, 1962) p. 305.
  3. A. W. Lohmann, "Wavefront reconstruction for incoherent objects," J. Opt. Soc. Am., vol. 55, no. 11, pp. 1555-1556, 1965.
  4. G. Cochran, "New method of making Fresnel transforms with incoherent light," J. Opt. Soc. Am., vol. 56, no. 11,pp. 1513-1517, 1966.
  5. P. J. Peters, "Incoherent holograms with mercury light source," Appl. Phys. Lett., vol. 8, no. 8, pp. 209-210, 1966.
  6. J. Rosen and G. Brooker, "Digital spatially incoherent Fresnel holography," Opt. Lett. vol. 32, no. 8, pp. 912-914, 2007.
  7. J. Hong and M. K. Kim, "Single-shot self-interference incoherent digital holography using off-axis configuration," Opt. Lett. vol. 38, no. 23, pp. 5196-5199, 2013.
  8. G. Sirat and D. Psaltis, "Conoscopic holography", Opt. Lett. Vol 10, pp. 4-6, 1985.
  9. Y. Malet and G. Y. Sirat, "Conoscopic Holography application: multipurpose rangefinders", J. Opt. Vol 29, pp. 183-187, 1998.
  10. L. M. Mugnier, "Conoscopic holography: toward three-dimensional reconstructions of opaque objects", Appl. Opt. Vol 34, no 8, pp. 1363-1371, 1995.
  11. L. M. Mugnier and G. Y. Sirat, "On-axis conoscopic holography without a conjugate image," Opt. Lett. vol. 17, no. 4, pp. 294-296, 1992.
  12. Yariv and Yeh, Optical Waves in Crystals, Wiley Interscience (Hoboken, New Jersey, 2003), Chap. 5.
  13. G. Y. Sirat, "Conoscopic holography. I. Basic principles and physical basis," J. Opt. Soc. Am A., vol. 9, no. 1, pp. 70-83, 1992.