Transverse instabilities in photorefractive counterpropagating two-wave mixing.
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.
Sandfuchs
O
O
Leonardy
J
J
Kaiser
F
F
Beli
M R
MR