Qualitative characteristics of an image reconstructed from a reference-free hologram

<title>New variants of use of phase-conjugate feedback for content-addressable data retrieval by thin holograms</title>

“…6), its response to the field (4), diffracted into the -1-st order ofthe etalon hologram, is described by the expression: greflGlG =(tiIp*p*(y +G*))(Tip(+G*G))ti(Ti)2 pI p*(ff+G*G+yG+G*G,) . (13) Indeed, at scattering upon the adopted minor the conelation peak is reversed with efficiency ' and reads out a <<symmetric>> (in the sense of being a product of amplitudes of the same wave) aureole p*yGG , and the <<non-symmetric>> (i. e. a product of amplitudes of two different waves) aureole pG'G without conjugation transfers its modulation (because of thinness of the adopted hologram) to spatially reversed reference wave p*YG*G and diffracts upon the <<symmetric>> aureole. It is possible to show, that the last process also contributes into the foIñ'ation of the reference wave and both the <<symmetric>> and <<non-symmetric>> aureoles: G*GG*Gy +G'G+yG'G.…”