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Acentric; nonlinear; crystal growth; Z scan; optical limiting

A novel organic crystal namely (2E, 4E)-[dimethylamino) phenyl]-1-(4methylphenyl) penta-2,4-dien-1-one has been grown successfully from the slow evaporation method. The single-crystal X-ray diffraction study revealed that the compound belongs to the orthorhombic crystallographic system with noncentrosymmetric P₂₁₂₁₂₁ space group with lattice parameters a = 7.1354(3) A^° , b = 11.2112(7) A^° and 20.0744(11) A^° . The thermal properties have been studied by using Thermo Gravimetric (TG) and Differential Scanning calorimetry (DSC). The second harmonic generation (SHG) efficiency of the compound is 2.9 times that of urea for Nd-YAG laser operating at wavelength 1064 nm. We also report the results of thermally induced third-order nonlinear optical (NLO) properties of NLO material investigated by Z-scan technique using continuous wave (CW) laser. The calculated values of c_R⁽³⁾,c_i⁽³⁾ and c⁽³⁾ are of the order of 10^-7esu, 10^-8 esu and 10^-7 esu, respectively. The estimated value of the non-linear refractive index is found to be - 4.21 x 10^-8 cm²/W. The compound also exhibits promising optical limiting properties at 532 nm wavelength.

S RAGHAVENDRA¹ T CHANDRA SHEKHARA SHETTY² C S CHIDAN KUMAR³ S NAVEEN⁴ SIDDEGOWDA CHANDRAJU⁵ SHIVARAJ R MAIDUR⁶ PARUTAGOUDA SHANKARAGOUDA PATIL⁶ G S ANANTHNAG⁷ S M DHARMAPRAKASH⁸

1. Department of Engineering Physics, Adichunchanagiri Institute of Technology, Chikkamagaluru 577102, India
2. Department of Post Graduate Studies and Research in Physics, St Aloysius College (Autonomous), Mangaluru 575003, India
3. Department of Engineering Chemistry, VidyaVikas Institute of Engineering and Technology, Visvesvaraya Technological University, Alanahalli, Mysuru, Karnataka 570028, India
4. Institution of Excellence, University of Mysore, Manasagangotri, Mysuru 570 006, India
5. Department of Sugar Technology and Chemistry, Sir M. Visvesvaraya PG Center, University of Mysore, Tubinakere, Karnataka 571402, India
6. Department of Physics, K. L. E. Institute of Technology, Opposite Airport, Gokul, Hubballi 580030, India
7. Department of Chemistry, B. M. S. College of Engineering, Bull Temple Road, Bengaluru 560019, India
8. Department of Studies in Physics, Mangalore University, Mangalagangotri 574199, India

Published

29 May 2020

Manuscript received

26 September 2018

Manuscript revised

23 August 2019

Accepted

19 December 2019