Could you teach me about spin orientation by optical technique. Thanks a lot!
Welcome to PF thienma;
Unfortunately it is difficult for us to answer your question thoroughly without some context. Also, few posters will have the patience to write a book chapter for you in their own time. I recommend doing some reading yourself and then approaching us with specific questions (references are also helpful for more complex topics).
I still hope there is someone who talks about this problem in a simple way or tutors me step by step what I have to read and understand.
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