Nonlinear optical crystal and manufacturing method thereof
AssigneeNational Central University
InventorsKwang-Hwa Lii, Wen-Jung Chang, Bor-Chen Chang, Tzu-Ling Chao
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Abstract
A nonlinear optical crystal has a chemical formula Li2X4TiOSi4O12, wherein X=K or Rb. The nonlinear optical crystal belongs to tetragonal system with space group P4nc and Z=2. The unit cell parameters of Li2K4TiOSi4O12 are a=b=11.3336(5) Å, c=5.0017(2) Å; and the unit cell parameters of Li2Rb4TiOSi4O12 are a=b=11.5038(6) Å, c=5.1435(3) Å. The two crystals are thermally stable and show strong second harmonic generation with high laser damage threshold.
Claims10
A nonlinear optical crystal of a formula Li2X4TiOSi4O12, wherein X=K or Rb.
A nonlinear optical crystal of a formula Li2K4TiOSi4O12, wherein the nonlinear optical crystal belongs to tetragonal system, space group thereof is P4nc, Z=2 and unit cell parameters are a=b=11.3336(5) Å, c=5.0017(2) Å.
A nonlinear optical crystal of a formula Li2Rb4TiOSi4O12, wherein the nonlinear optical crystal belongs to tetragonal system, space group thereof is P4nc, Z=2 and unit cell parameters are a=b=11.5038(6) Å, c=5.1435(3) Å.
A method of manufacturing a nonlinear optical crystal, comprising:
- mixing LiF, XF, TiO2 and SiO2 to form a first starting reagent, wherein X=K or Rb;
- heating the first starting reagent to a first temperature to melt the first starting reagent and undergo a reaction;
- and
- cooling down the first starting reagent from the first temperature to a second temperature to crystallize a nonlinear optical material represented by a formula Li2X4TiOSi4O12.
A method of manufacturing a nonlinear optical crystal, comprising:
- mixing LiOH.H2O, KOH, TiO2, SiO2 and H2O to form a second starting reagent;
- heating the second starting reagent to a third temperature to undergo a hydrothermal reaction at the third temperature to form a supersaturated solution comprising Li2K4TiOSi4O12;
- and
- cooling down the second starting reagent from the third temperature to a fourth temperature to crystallize a nonlinear optical material represented by a formula Li2K4TiOSi4O12.
Dependencies are inferred from the claim text.