Nonlinearity of a response in photorefractive crystals with a square-wave applied field

Шандаров, С. М.; Nazhestkina, Nadezhda; Kobozev, Oleg V.; Kamshilin, Alexei A.

doi:10.1007/s003400050738

Cited by 22 publications

(7 citation statements)

References 1 publication

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“…This is manifested, in particular, in a decrease in the first-harmonic amplitude, an increase in high space-harmonic amplitudes, and, in some cases, in the generation of space subharmonics of the photoretractive grating [7][8][9][10][11][12][13][14]. A meander alternating field applied to the crystal has a most pronounced effect on the nonlinearity of response [8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 94%

Multiwave Interaction of Light in a Bismuth Silicon Oxide Crystal in an Applied Meander Electric Field

Mandel

2004

Russ Phys J

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An analysis is made of photorefractive nonlinearity resulting from the interaction between the charge gratings formed in a bismuth silicate crystal in an applied meander electric field under illumination by a strong reference and two signal light beams. It is shown that the nonlinear cross interaction between the primary holographic gratings recorded in the crystal should be taken into account where the intensities of the reference and signal light beams differ from one another in magnitude (less than 300 times).

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Section: Introductionmentioning

confidence: 94%

Multiwave Interaction of Light in a Bismuth Silicon Oxide Crystal in an Applied Meander Electric Field

Mandel

2004

Russ Phys J

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“…It follows from Eqs. 7 However, these equations can be solved only numerically with a powerful computer. Note that in experiments, the condition I 0 ӷI d is usually satisfied.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Polarization self-modulation of speckle patterns in a bundle of photorefractive crystals

Nazhestkina

Nippolainen

Kamshilin

et al. 2000

Journal of Applied Physics

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The experimental and theoretical studies of a polarization self-modulation effect in photorefractive Bi 12 TiO 20 crystals are presented. We developed an approximate theory that allows optimizing the performance of the adaptive sensor based on the polarization self-modulation effect. To diminish external voltage simultaneously keeping the aperture of the sensor large enough, we constructed a sensor consisted of several Bi 12 TiO 20 crystals of different orientations. High sensitivity and adaptability to slow environment changes of the proposed sensor make it useful for various applications, particularly for laser ultrasound detection.

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“…Negative values of f 0 give no discontinuity of e͑z͒. The steepening of the field profile is a nonlinear feature that appeared in some previous numerical calculations [6,15].…”

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confidence: 92%

“…The effects of material nonlinearity lying outside the linear approximation can become decisive in this region. Previous theoretical attempts [5,6,15] to enter the nonlinear domain have shown some modification of the ac response but they have not found its new general qualitative features.…”

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confidence: 96%

Singular Behavior of Light-Induced Space Charge in Photorefractive Media under an ac Field

et al. 2000

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We show that a photoconductive crystal, placed in a rapidly alternating ac field and exposed to nonuniform light, exhibits singularities of the induced space charge and discontinuities of the corresponding space-charge field. The singularities appear at the local intensity maxima when the curvature of the intensity profile exceeds a certain (often very low) threshold value. We analyze the characteristic features of the singular ac response and consider its possible optical manifestations.

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Nonlinearity of a response in photorefractive crystals with a square-wave applied field

Cited by 22 publications

References 1 publication

Multiwave Interaction of Light in a Bismuth Silicon Oxide Crystal in an Applied Meander Electric Field

Multiwave Interaction of Light in a Bismuth Silicon Oxide Crystal in an Applied Meander Electric Field

Polarization self-modulation of speckle patterns in a bundle of photorefractive crystals

Singular Behavior of Light-Induced Space Charge in Photorefractive Media under an ac Field

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