The discussion focuses on determining the orientation of periodically poled lithium niobate crystals in X-cut without the presence of orientation flats. Participants explore non-destructive methods for identifying crystal orientation, including various techniques and references.
Participants express various methods for determining crystal orientation, but no consensus is reached on a definitive approach. Multiple techniques and references are suggested, indicating a range of perspectives on the best method to use.
The discussion does not resolve the limitations of the proposed methods or the specific conditions under which they may be effective. There is also no clarity on the dependence of results on the definitions of crystal orientation.
What is the geometry of the crystals? Does the certification (or certificate of compliance) state a crystal orientation with respect to the geometry?abbasdalvi7 said:TL;DR Summary: Need help to determine axis orientation of lithium niobate.
So I have periodically poled lithium niobate crystals in X-cut but they didnt come with orientation flats.
I had wondered about that.DaveE said:It's birefringent, you should be able to tell with polarized light.