Strong second harmonic generation from the tantalum thioarsenates A 3Ta 2AsS 11 (A = K and Rb)

Tarun K. Bera; Joon I. Jang; John B. Ketterson; Mercouri G. Kanatzidis

doi:10.1021/ja807928d

Strong second harmonic generation from the tantalum thioarsenates A ₃Ta ₂AsS ₁₁ (A = K and Rb)

Tarun K. Bera, Joon I. Jang, John B. Ketterson, Mercouri G. Kanatzidis

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223 Scopus citations

Abstract

The strongly anisotropic thioarsenates A ₃Ta ₂AsS ₁₁ are stabilized in a polysulfide flux. All compounds contain the same parallel 1/∞ [Ta ₂AsS ₁₁ ^3-] polymeric anionic chains, but the size of the alkali-metals has a profound effect on the packing of the chains. The K ⁺ or Rb ⁺ favor noncentrosymmetric packing of the chains, whereas the larger Cs ⁺ favors the centrosymmetric packing. The chains feature the combination of two asymmetric units [Ta ₂S ₁₁] and [AsS ₃] and exhibit strong nonlinear optical (NLO) second harmonic generation (SHG) response. Polycrystalline samples exhibit is up to × 15 times stronger SHG than that of commercially used AgGaSe ₂.

Original language	English (US)
Pages (from-to)	75-77
Number of pages	3
Journal	Journal of the American Chemical Society
Volume	131
Issue number	1
DOIs	https://doi.org/10.1021/ja807928d
State	Published - Jan 14 2009

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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abstract = "The strongly anisotropic thioarsenates A 3Ta 2AsS 11 are stabilized in a polysulfide flux. All compounds contain the same parallel 1/∞ [Ta 2AsS 11 3-] polymeric anionic chains, but the size of the alkali-metals has a profound effect on the packing of the chains. The K + or Rb + favor noncentrosymmetric packing of the chains, whereas the larger Cs + favors the centrosymmetric packing. The chains feature the combination of two asymmetric units [Ta 2S 11] and [AsS 3] and exhibit strong nonlinear optical (NLO) second harmonic generation (SHG) response. Polycrystalline samples exhibit is up to × 15 times stronger SHG than that of commercially used AgGaSe 2.",

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T1 - Strong second harmonic generation from the tantalum thioarsenates A 3Ta 2AsS 11 (A = K and Rb)

AU - Bera, Tarun K.

AU - Jang, Joon I.

AU - Ketterson, John B.

AU - Kanatzidis, Mercouri G.

PY - 2009/1/14

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N2 - The strongly anisotropic thioarsenates A 3Ta 2AsS 11 are stabilized in a polysulfide flux. All compounds contain the same parallel 1/∞ [Ta 2AsS 11 3-] polymeric anionic chains, but the size of the alkali-metals has a profound effect on the packing of the chains. The K + or Rb + favor noncentrosymmetric packing of the chains, whereas the larger Cs + favors the centrosymmetric packing. The chains feature the combination of two asymmetric units [Ta 2S 11] and [AsS 3] and exhibit strong nonlinear optical (NLO) second harmonic generation (SHG) response. Polycrystalline samples exhibit is up to × 15 times stronger SHG than that of commercially used AgGaSe 2.

AB - The strongly anisotropic thioarsenates A 3Ta 2AsS 11 are stabilized in a polysulfide flux. All compounds contain the same parallel 1/∞ [Ta 2AsS 11 3-] polymeric anionic chains, but the size of the alkali-metals has a profound effect on the packing of the chains. The K + or Rb + favor noncentrosymmetric packing of the chains, whereas the larger Cs + favors the centrosymmetric packing. The chains feature the combination of two asymmetric units [Ta 2S 11] and [AsS 3] and exhibit strong nonlinear optical (NLO) second harmonic generation (SHG) response. Polycrystalline samples exhibit is up to × 15 times stronger SHG than that of commercially used AgGaSe 2.

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Strong second harmonic generation from the tantalum thioarsenates A ₃Ta ₂AsS ₁₁ (A = K and Rb)

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