The walk off is the phenomenon that the intensity distribution of a beam in an anisotropic crystal drifts away from the direction of the wave vector .
By angular tuning in order to safe the Phase-Matching in the inner of this type electrooptical crystal.
see more about this subject by reference:
Optical Wave in Crystals, by Amon Yarive & P. Yeh, John-Weiley, New YOrk 1984.
regard
Raad
I agree with Dr. Raad to see the same reference
Best regs.
Ali
Thank Dr. Ali H. Alhamdani,
Fir this your agreement
, it was my pleasures
best regards
Thanks Dr. Raad and Dr. Ali H. Alhamdani,
for your explaining.
dear colleague zahraa
To avoids the variations modulation during long period can By Angle tuning techniques and the temperature compensates you can save the effeciency conversion in highest conditions
Regard
Thank you Dr. Raad
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