US 12,436,316 B2
Effective nonlinear optical coefficient optimization method for langasite group solid solution crystals
Haohai Yu, Jinan (CN); Dazhi Lu, Jinan (CN); Yuzhou Wang, Jinan (CN); Huaijin Zhang, Jinan (CN); and Jiyang Wang, Jinan (CN)
Assigned to Shandong University, Jinan (CN)
Filed by Shandong University, Jinan (CN)
Filed on Sep. 27, 2022, as Appl. No. 17/953,362.
Application 17/953,362 is a continuation in part of application No. PCT/CN2022/114468, filed on Aug. 24, 2022.
Claims priority of application No. 202210986346.8 (CN), filed on Aug. 17, 2022.
Prior Publication US 2023/0015923 A1, Jan. 19, 2023
Int. Cl. G02B 1/00 (2006.01)
CPC G02B 1/002 (2013.01) 2 Claims
OG exemplary drawing
 
1. An effective nonlinear optical coefficient optimization method for langasite group solid solution crystals, wherein the langasite group crystal A3BC3D2O14 mainly comprises langanite (LGN) crystal, langatate (LGT) crystal and langasite (LGS) crystal; the solid solution crystals are formed by adjusting a component proportion of langasite group crystals with the same structure, so that different ions mix and occupy sites in a polyhedral group, and a polyhedral lattice structure, distortion degree, refractive index and refractive dispersion of the solid solution crystal are changed,
wherein the B-site group is mixed with and occupied by Ga3+, Nb5+, Ta5+, Ti4+, Zr4+, Hf4+, Sn4+, and Sb5+ ions;
the D-site group is mixed with and occupied by Ga3+, Ge4+, Si4+ ions; or
different ions mix and occupy sites in two types of polyhedral groups of B-site and D-site at same time; Ga3+ and Zr4+ ions mix and occupy sites at the B-site, and Ga3+ and Si4+ ions mix and occupy sites at the D-site to form lanthanum gallium zirconate solid solution crystals.