Walk-off reduction, using an external optical plate and Bessel–Gaussian interaction
Mansouri Masoume, Askarbioki Mohsen, Ghavami Sabouri Saeed†, Khorsandi Alireza‡
       
Variation of the third-harmonic generation walk-off angle with the thickness of the BK7 plate while it was fixed at the angle of 35°. Theoretical results are included to corroborate the measurement.