From CdPb₈(SeO₃)₄Br₁₀ to Pb₃(TeO₃)Br₄: the first tellurite bromide exhibiting an SHG response and mid-IR transparency

Abstract

NCS Pb3(TeO3)Br4 was obtained based on the CS CdPb8(SeO3)4Br10 by mild hydrothermal reactions. Pb3(TeO3)Br4 can exhibit an SHG response equivalent to KDP, appropriate birefringence, wide optical transparency window and high thermal stability.

A UV non-hydrogen pure selenite nonlinear optical material for achieving balanced properties through framework-optimized structural transformation

“…Considering the deviation of the IR cut-off edge for powder and crystal measurements due to multiphonon absorption, 50% eliminations were made. 53,54 So, the transparency range of NaLu(SeO 3 ) 2 was estimated to be 0.21–5.8 μm.…”

Hg3Se(SeO3)(SO4): A Mixed-Valent Selenium Compound with Mid-Infrared Transmittance Obtained by In Situ Reaction

“…In summary, Hg 3 Se­(SeO 3 )­(SO 4 ) has no evident absorption at 0.28–13.2 μm, indicating that it has a wide transparency range (Figure ). Considering the infrared cutoff edge deviation due to multiphoton absorption in powder and crystal measurements, an elimination of 50% was performed. − Therefore, the transparency range of Hg 3 Se­(SeO 3 )­(SO 4 ) should be 0.28–6.6 μm, covering an important atmospheric transparency window of 3–5 μm. This suggests that the mixed-valent (+4, −2) selenite selenide can be a potential material system for birefringent materials in the mid-infrared (MIR) region.…”