AI Article Synopsis
- A new second harmonic generation material, LiMg(IO) (LMIO), is created by substituting elements in LiM(IO) (where M can be Ti, Sn, or Ge) and adjusting the crystal structure for optimal alignment of (IO) groups.
- LMIO demonstrates a highly efficient SHG effect, measuring about 24 times that of KDP under 1064 nm laser light, surpassing the performance of previously known materials like α-LiIO.
- The incorporation of magnesium increases the band gap to 4.34 eV and results in a reduced absorption edge of 285 nm, illustrating the effectiveness of aliovalent substitution in developing new SHG materials.
Article Abstract
An excellent second harmonic generation (SHG) material, LiMg(IO) (LMIO), has been elaborately designed from LiM(IO) (M = Ti, Sn, and Ge) by aliovalent substitution of the central M cation followed by Wyckoff position exchange. The new structure sustains the ideal-alignment of (IO) groups. Importantly, LMIO exhibits an extremely strong SHG effect of roughly 24 × KHPO (KDP) under 1064 nm laser radiation or 1.5 × AgGaS (AGS) under 2.05 μm laser radiation, which is larger than that of α-LiIO (18 × KDP). The replacement of M with Mg without d-d electronic transitions induces an obviously larger band gap (4.34 eV) with a short absorption edge (285 nm). This study shows that single-site aliovalent substitution provides a new synthetic route for designing SHG materials.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7066663 | PMC |
| http://dx.doi.org/10.1039/c9sc04832d | DOI Listing |
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