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Angular dependence of diffraction efficiency of a dynamic hologram in a reversible photochromatic medium

V.V. Ivakhnik1, V.I. Nikonov1, V.I. Nikonov1
1 Samara State Aerospace University

 PDF, 301 kB

Pages: 94 - 98.

Abstract:
Angular characteristics of a dynamic hologram, recorded by a “fan” of plane waves in a reversible photochromatic medium, are studied under various correlations between the intensities of these waves. It is shown that the maximum increase of the relative diffraction efficiency with the increase of the angle between the reference and object waves is observed for thin holograms. There is such a PCM thickness beginning from which the relative dependence of the hologram diffraction efficiency upon the angle ceases to depend upon the PCM thickness, reaching some maximum distribution. Coincidence is shown of the angular characteristics of the holograms, recorded under the condition that the reference wave intensity is much greater than the object wave intensity, and of the holograms, recorded by a “fan” of plane waves of equal intensity. The hologram diffraction efficiency change is studied under the readout wave deviation from the Bragg angle.

Keywords:
diffraction efficiency, dynamic hologram, photochromatic medium, object wave, PCM, Bragg angle.

Citation:
Ivakhnik VV, Nikonov VI, Shilnikova EV. Angular dependence of diffraction efficiency of a dynamic hologram in a reversible photochromatic medium. Computer Optics 2002; 24: 94-98.

References:
  1. Barachevskii VA, Lashkov GI, Tsekhomskii VL. Photochromism and Its Applications [In Russian]. Moscow: "Khimiya" Publisher; 1977.
  2. Tomlinson WJ. Volume holograms in photochromic materials. Appl Opt 1975; 14(10): 2456-2467.
  3. Bosomworth DR, Gerrtsen HJ. Thick holograms in photochromic materials. Appl Opt 1968; 7(1): 95-98.
  4. Ivakhnik VV. Diffraction efficiency of a volume dynamic hologram in a photochromic medium [In Russian]. Optika i Spektroskopiya 1992; 72: 703-707.
  5. Ivakhnik VV. Diffraction efficiency of a dynamic hologram in a PCS taking into account the modulation depth of the recorded interference grating [In Russian]. Optika i Spektroskopiya 1994; 77(1): 93-96.
  6. Garaschuk VP, Ivakhnik VV, Nikonov VI. Temperature dependence of the diffraction efficiency of a dynamic hologram in a reversible photochromic medium [In Russian]. Optika i Spektroskopiya 1998; 85(4): 671-676.

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