Polarization properties of transmission and diffraction in BSO—a unified analysis

Goff, John R.

doi:10.1364/josab.12.000099

Cited by 18 publications

(3 citation statements)

References 27 publications

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“…Owing to the concomitant presence of optical activity and linear birefringence, light diffraction in these crystals exhibits complex polarization effects. A large number of authors [8][9][10][11] have studied the polarization characteristics of light diffracted by a static, prewritten transmission grating as a function of the polarization direction of the readout beam. It was demonstrated that under certain conditions the emerging readout beam and the image-bearing diffracted beam have orthogonal polarizations, and consequently the signal-to-noise ratio in the output image can be greatly enhanced when the strong readout beam is eliminated with a linear polarizer.…”

Section: Introductionmentioning

confidence: 99%

Polarization properties of self-diffraction in sillenite crystals: reflection volume gratings

Mallick

Miteva²,

Nikolova³

1997

J. Opt. Soc. Am. B

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International audienceWe study two-beam interaction in photorefractive sillenite crystals in reflection geometry and derive analytic expressions for the signal gain and its polarization direction in the presence of a strong pump beam. The crystal is cut normal to one of the crystallographic axes, and no external electric field is applied. Crystal absorption and its natural optical activity are taken into account. The coupling effects are strongly dependent on the polarization directions of the interacting beams. We determine the optimal polarization directions and optimal crystal thickness that give maximum signal gain. Experimental results are in excellent agreement with theoretical calculations

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Section: Introductionmentioning

confidence: 99%

Polarization properties of self-diffraction in sillenite crystals: reflection volume gratings

Mallick

Miteva²,

Nikolova³

1997

J. Opt. Soc. Am. B

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“…To examine the optical properties of BSO between two polarizers as shown in ®gure 1, we apply a Jones formalism [12,13]. First, we examined the dependency of the transmitted (uniform, non-addressing) intensity as a function of the input polarization angle and ¢n (see ®gure 2).…”

Section: Self-®ltering Procedures With Bso: Description Of the Methodsmentioning

confidence: 99%

Spatial self-filtering using photorefractive and liquid crystals

Wagemann

Tiziani

1998

Journal of Modern Optics

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In a paper by MoÈ bus et al. a method for defect enhancement by spatial self-®ltering using B12SiO20 (BSO) in the Fourier plane of an optical processor was presented. In periodic structures the unwanted sharp peaks in the Fourier plane have to be removed in order to enhance defects. In this paper we describe sub-micron defect detection by self-®ltering with BSO in detail and compare the photorefractive method with a new very promising ®ltering approach using optically addressed spatial light modulators (OASLM). Interesting results especially for chromium-on-glass masks, CCD arrays and memory chips were obtained with a simple set-up. In addition numerical techniques will be examined.

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“…P HOTOREFRACTIVE silicates, such as ␥-Bi 12 SiO 20 (BSO), ␥-Bi 12 GeO 20 (BGO), and ␥-Bi 12 TiO 20 (BTO), have been of growing interest because of their potential applications in various electrooptic devices. [1][2][3][4][5][6][7][8] These crystals are commonly grown by the Czochralski technique (for BSO 9,10 and BGO 11 ), the vertical Bridgman method (for BSO 12 ), or the top-seeded technique from an off-stoichiometric melt (for BTO 13 ). Deficiencies of silicon (only 87% of the silicon sites may be occupied) in BSO crystals 14 and platinum inclusion in BTO crystals, caused by crucible erosion, 15 have been reported.…”

Section: Introductionmentioning

confidence: 99%

Reaction Pathways in the Synthesis of Photorefractive gamma‐Bi12MO20 (M = Si, Ge, or Ti)

Ozoe

1997

Journal of the American Ceramic Society

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Reaction pathways in the synthesis of three photorefractive silicates—γ‐Bi12 SiO20 (BSO), γ‐Bi12 GeO20 (BGO), and gamma‐Bi12 TiO20 (BTO)—were systematically investigated. The main results were as follows: (i) all the reactions of the form 6Bi2O3+ MO2→> γ‐Bi12 MO20 (SR1 for M = Si, SR2 for M = Ge, SR3 for M = Ti) in the solid state seemed to be diffusion‐controlled processes and were affected by both temperature and time, where the reaction temperature increases in the order SR1 < SR2 < SR3; (ii) the metastable phases Bi2 SiO5 (tetragonal) in reaction SR1, Bi2 GeO5 (orthorhombic) in reaction SR2, Bi4 Ti3 O12 (orthorhombic) in reaction SR3 may be formed and seemed to greatly accelerate the above‐mentioned solid‐state reaction processes; and (iii) for a continuous heating process, pure γ‐Bi12 SiO20 and γ‐Bi12 GeO20 could be produced before melting, whereas pure γ‐Bi12 TiO20 could not be produced, even if all the mixed phases had melted.

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Polarization properties of transmission and diffraction in BSO—a unified analysis

Cited by 18 publications

References 27 publications

Polarization properties of self-diffraction in sillenite crystals: reflection volume gratings

Polarization properties of self-diffraction in sillenite crystals: reflection volume gratings

Spatial self-filtering using photorefractive and liquid crystals

Reaction Pathways in the Synthesis of Photorefractive gamma‐Bi12MO20 (M = Si, Ge, or Ti)

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