Theory of polarization holography

Kuroda, Kazuyuki; Matsuhashi, Yusuke; Fujimura, Ryushi; Shimura, Tsutomu

doi:10.1007/s10043-011-0072-5

Cited by 95 publications

(39 citation statements)

References 17 publications

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“…These are the extension of Kogelnik's couple wave equations to the vectorial version [11]. Details of vector coupled wave equations will be reported elsewhere [12].…”

Section: Reconstructionmentioning

confidence: 99%

Theory of polarization holography

Kuroda

2011

2011 10th Euro-American Workshop on Information Optics

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Optical response of polarization sensitive materials is derived from the phenomenological point of view. It is found that the polarization-sensitive response function is expressed by the tensor product of the electric field vector and its complex conjugate. We analyze the reconstruction of polarization holograms in arbitrary geometry using vector coupled wave equations. The condition that the polarization of reconstructed signal is equal to that of recording signal is discussed.

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“…These are the extension of Kogelnik's couple wave equations to the vectorial version [11]. Details of vector coupled wave equations will be reported elsewhere [12].…”

Section: Reconstructionmentioning

confidence: 99%

Theory of polarization holography

Kuroda

2011

2011 10th Euro-American Workshop on Information Optics

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“…[24][25][26][27] It is possible to record data in polarization state so that multilevel recording 25) or multiplexing using orthogonal linear polarization 26,27) is feasible. In these methods, the interpixel crosstalk cancellation technique based on the phase difference would be effective in the case of using orthogonal linear polarization because there is no interaction of interference between two orthogonal polarization beams.…”

Section: Compatibility With Other High-density Recording Methodsmentioning

confidence: 99%

Interpixel crosstalk cancellation on holographic memory

Ishii

Fujimura

2017

Jpn. J. Appl. Phys.

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In holographic memory systems, there have been no practical techniques to minimize interpixel crosstalk thus far. We developed an interpixel crosstalk cancellation technique using a checkerboard phase pattern with a phase difference of π/2, which can decrease the size of the spatial filter along the Fourier plane with the signal-to-noise ratio (SNR) kept high. This interpixel crosstalk cancellation technique is simple because it requires only one phase plate in the signal beam path. We verified the effect of such a cancellation technique by simulation. The improvement of SNR is maximized to 6.5 dB when the filter size specified in the Nyquist areal ratio is approximately 1.05 in ideal optical systems with no other fixed noise. The proposed technique can improve SNR by 0.85 in an assumed monocular architecture at an actual noise intensity. This improvement of SNR is very useful for realizing high-density recording or enhancing system robustness.

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“…These optical instruments with built-in polarization gratings are expected to find practical uses. Accompanying their developments, theoretical approaches were also advanced including the simulations of optical propagation in the gratings [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Formation of positive and negative anisotropic holographic gratings depending on recording energy in photoreactive liquid crystalline copolymer films

et al. 2012

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Anisotropic diffractive gratings formed by birefringent molecular alignment are fabricated by a holographic technique using a photo-cross-linkable liquid crystalline copolymer (PLCCP). Depending on the exposure energy used for holographic recording, bright or dark regions of the interference fringe can be chosen for the molecularaligned region, analogous to positive-and negative-type photoresist processing in photolithography. In conjunction with simultaneously generated surface relief gratings, the anisotropic refractive index modulation inherent in the PLCCP film exhibits different diffraction properties depending on the incident beam polarization. The anisotropic refractive index grating profiles are quantitatively presented for two cases determined by the exposure energy, based on the Fourier analysis of diffractive optics. The selection of different grating formations selected by varying only the ex-A. Emoto ( ) posure energy could provide a strategy for the fabrication of functionalized diffractive optical elements.

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Theory of polarization holography

Cited by 95 publications

References 17 publications

Theory of polarization holography

Theory of polarization holography

Interpixel crosstalk cancellation on holographic memory

Formation of positive and negative anisotropic holographic gratings depending on recording energy in photoreactive liquid crystalline copolymer films

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