How can I find the phase matching angle of a biaxial crystal ( monoclinic) , if the refractive index of a crystal is n2>n3>n1 ?

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Abubaker Elshiekh Abdel Rahman

You don’t explain the method of preparation u sample? you have first, for example substrate , coated with….. ? then you coated again with other material ….? Finally you three layers. Can give more information

Silambarasan Anbumani

Dear Sir,

Thanks for your concern about my question.

My sample is a bulk crystal.