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

Research output: Contribution to journalArticle

166 Citations (Scopus)

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 languageEnglish
Pages (from-to)75-77
Number of pages3
JournalJournal of the American Chemical Society
Volume131
Issue number1
DOIs
Publication statusPublished - Jan 14 2009

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Tantalum
Alkali Metals
Harmonic generation
Polysulfides
Alkali metals
Fluxes
polysulfide

ASJC Scopus subject areas

  • Chemistry(all)
  • Catalysis
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

Strong second harmonic generation from the tantalum thioarsenates A 3Ta 2AsS 11 (A = K and Rb). / Bera, Tarun K.; Jang, Joon I.; Ketterson, John B.; Kanatzidis, Mercouri G.

In: Journal of the American Chemical Society, Vol. 131, No. 1, 14.01.2009, p. 75-77.

Research output: Contribution to journalArticle

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