Multiple forward phase conjugation in a photorefractive bismuth silicate crystal

Takács, J.; Ellin, H. C.; Solymár, L.

doi:10.1016/0030-4018(92)90533-w

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Cited by 5 publications

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“…Here, we consider a forward (transmission) geometry, with all beams copropagating, in a self-defocusing medium. While both the configuration [4][5][6][7] and the nonlinearity [8,9] have been studied in FWM experiments, the evolution of cascaded modes has not been previously observed. We report such observations below, in both the near-field and the far-field (Fourier space) regions, in one and two transverse dimensions.…”

mentioning

confidence: 99%

Forward four-wave mixing with defocusing nonlinearity

2007

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mentioning

confidence: 99%

Forward four-wave mixing with defocusing nonlinearity

2007

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Optical phase conjugation: principles, techniques, and applications

2002

Progress in Quantum Electronics

152

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Effect of piezoelectricity on the photorefractive gain in a bismuth silicate crystal

et al. 1994

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The application of a voltage, Vo, across a photorefractive crystal in the presence of detuning is well known as a means of enhancing twowave gain. By mounting a crystal of bismuth silicate, with faces cut parallel to the (001), (110) and (110) planes, in a rotating holder, measurements of two. wave gain as a function of 0, the angle between the electric field vector Eo (in the [001] direction) and the grating vector, K (in the (1 TO) plane), have been made. Our results show that by having a nonzero value of 0 the signal gain can be improved by a factor of two. Furthermore the experimental results showed that the 0 dependent gain peaks differ in magnitude according to whether the crystal is rotated in an anti-clockwise or clockwise direction. In order to model the experimental results the steady-state expression for the space-charge field is extended to two dimensions and the usually neglected piezoelectric effect is included in the analysis of the modulation of the refractive index by the presence of this field inside the crystal. The asymmetry of the gain peaks is found to be caused by the optical activity of bismuth silicate and is predicted by the theory.

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Multiple forward phase conjugation in a photorefractive bismuth silicate crystal

Cited by 5 publications

References 4 publications

Forward four-wave mixing with defocusing nonlinearity

Forward four-wave mixing with defocusing nonlinearity

Optical phase conjugation: principles, techniques, and applications

Effect of piezoelectricity on the photorefractive gain in a bismuth silicate crystal

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