Patent ID: 11971644
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 8:
9. The wavelength conversion device according to claim 1, wherein
the substrate is LiNbO3 (lithium niobate), KNbO3 (potassium niobate), LiTaO3 (lithium tantalate), LiNb(x)Ta(1-31 x)O3 (0≤x≤1) (lithium tantalate of a nonstoichiometric composition), or KTiOPO4 (potassium titanate phosphate), and further includes at least one selected from Mg (magnesium), Zn (zinc), Sc (scandium), or In (indium) therein as an additive.