Jump to main content
Jump to site search


Design and Synthesis of Nonlinear Optical Material with Wide Band Gap: from SrB4O7 to BaAl4S7

Abstract

A most convenient method to generate mid-infrared (mid-IR) high-power lasers is through nonlinear optical (NLO) process by using the NLO materials with high laser damage threshold (LDT). The LDT is intrinsically dependent of energy band gap, but often inverse to NLO effect. Therefore, achieving the good balance between band gap (Eg > 3.0 eV) and NLO response (dij > 10  KDP) in a good mid-IR NLO material is necessary. In this work, inspired by the oxide SrB4O7 with the highest LDT in all known borate crystals, we propose that the chalcogenide BaAl4S7 with the similar crystal structure may have attractive NLO properties. The experiments reveal that indeed BaAl4S7 possesses the broadest band gap larger than 3.95 eV in all known mid-IR NLO chalcogenides, and its LDT is above 10 times of that of commercial material AgGaS2. Meanwhile, its NLO coefficient is above 10  KDP (half of that of AgGaS2). All these features demonstrate that BaAl4S7 is a potential candidate as a good mid-IR NLO material.

Back to tab navigation

Supplementary files

Publication details

The article was received on 12 Dec 2017, accepted on 14 Feb 2018 and first published on 14 Feb 2018


Article type: Communication
DOI: 10.1039/C7TC05693A
Citation: J. Mater. Chem. C, 2018, Accepted Manuscript
  •   Request permissions

    Design and Synthesis of Nonlinear Optical Material with Wide Band Gap: from SrB4O7 to BaAl4S7

    D. Mei, J. Jiang, F. Liang, S. Zhang, Y. Wu, C. Sun, D. Xue and Z. Lin, J. Mater. Chem. C, 2018, Accepted Manuscript , DOI: 10.1039/C7TC05693A

Search articles by author

Spotlight

Advertisements