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Transverse instabilities in photorefractive counterpropagating two-wave mixing |
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| Authors: | Sandfuchs O Leonardy J Kaiser F Beli M R |
| Abstract: | Threshold analysis for transverse instabilities in photorefractive counterpropagating two-wave mixing through reflection gratings is performed. A numerical algorithm for the treatment of wave equations in this geometry is developed, displaying the emergence of running transverse waves. They appear above a threshold in the applied electric field, and their transverse wave number and oscillation frequency agree well with the values predicted by stability analysis. |
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