Nondestructive readout of holograms in iron-doped lithium niobate crystals

Gulanyan, É Kh; Dorosh, I. R.; Iskin, V D; Mikaélyan, A L; Maiorchuk, M A

doi:10.1070/qe1979v009n05abeh009079

Cited by 15 publications

(5 citation statements)

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“…The image properties of the PCR were investigated by simulation, where e dj and j were calculated for each e sj by using Eqs. (1) and (2). We assumed that the hologram is large enough to neglect off-Bragg diffraction.…”

Section: ͑1͒mentioning

confidence: 99%

“…One of the simplest solutions is to read the hologram at a longer wavelength outside the sensitive spectral region of the recording media. However, reconstruction at a wavelength different from the recording one leads to deterioration of the reconstructed image, or narrowing of the image field due to Bragg's law [2]. Several papers [2][3][4][5][6][7] have addressed this issue and proposed some solutions.…”

mentioning

confidence: 99%

“…However, reconstruction at a wavelength different from the recording one leads to deterioration of the reconstructed image, or narrowing of the image field due to Bragg's law [2]. Several papers [2][3][4][5][6][7] have addressed this issue and proposed some solutions. For example, anisotropic diffraction [3] in a birefringent crystal increases the spatial bandwidth of the Bragg-matched grating vector but is not suitable for multiplexing because it requires a specific configuration.…”

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confidence: 99%

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Polychromatic reconstruction for volume holographic memory

2007

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We propose a method of reconstructing an image from a volume hologram at a wavelength different from the recording one. Spectrally broad but spatially coherent light was used as a probe beam. Each angular spectral component of the recorded hologram could be Bragg matched at one particular wavelength within the broadband spectrum. We experimentally demonstrated that a whole image could be reconstructed by using polychromatic light, whereas only a partial image was obtained by using single-mode laser light. We discuss the required bandwidth of the probe beam and the deformation of the reconstructed image.

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Section: ͑1͒mentioning

confidence: 99%

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Polychromatic reconstruction for volume holographic memory

2007

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“…For image bearing holograms, however, light at the readout wavelength cannot in general be Bragg matched to all the components of the signal. Reconstruction with spherical wavefronts has shown improved results, and strategies to determine optimal reconstruction of wavefronts have been developed [102]- [105].…”

Section: Other Techniques For Nondestructive Readoutmentioning

confidence: 99%

Holographic Data Storage Systems

Hesselink

1993

[1993] Digests of International Magnetics Conference

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“…These issues are obviously caused by the destructive probe beam having the ability to expose the recording medium in a similar manner to the recording beam. To avoid such a problem, several nondestructive readout methods have been proposed so far (Gulanyan et al, 1979;Petrov et al, 1979;Külich, 1987), where the readout is performed at a longer wavelength, outside the sensitive spectral region of the recording material. These methods can successfully reconstruct the stored image at a wavelength different from the recording one, but most of these methods may not be practical for holographic memory systems because the multiplexing capability is considerably lowered.…”

Section: Introductionmentioning

confidence: 99%