Growth and Characterization of Single Crystals of l -Histidine Hydrochloride Monohydrate for Nonlinear Optical Applicati
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https://doi.org/10.1007/s11664-020-08526-8 Ó 2020 The Minerals, Metals & Materials Society
Growth and Characterization of Single Crystals of L-Histidine Hydrochloride Monohydrate for Nonlinear Optical Applications SUDHA YADAV,1,2 MANJU KUMARI,1,2 DEBABRATA NAYAK,1,2 SABYASACHI BANERJEE,4 NAGHMA KHAN,1,2 SUBHASH NIMANPURE,1,2 GIRIJA MOONA,2 RINA SHARMA,1,2 BHUPENDRA K. SHARMA,3 DIBAKAR ROY CHOWDHURY,4 N. VIJAYAN,1,2 and MUKESH JEWARIYA1,2,5 1.—Academy of Scientific and Innovative Research (AcSIR), CSIR-HRDC Campus, Ghaziabad, Uttar Pradesh 201002, India. 2.—CSIR-National Physical Laboratory, Dr. K.S. Krishnan Road, New Delhi 110012, India. 3.—Department of Science and Technology, ´ cole Centrale, Technology Bhavan, New Mehrauli Road, New Delhi 110016, India. 4.—Mahindra E Hyderabad, Telangana 500043, India. 5.—e-mail: [email protected]
In the present study, we have focused on the growth of semi-organic single crystals, as they play a vital role in the generation of a terahertz pulse and its potential applications. The single crystals of L-histidine hydrochloride monohydrate (LMHCL) were grown by slow evaporation solution growth by using deionized water as a solvent in a controlled atmosphere. Good quality crystals of the required size were obtained within 2 weeks. To estimate the lattice dimensions and get the structural information, powder x-ray diffraction (PXRD) study was performed in which we have found that the crystal belongs to the orthorhombic crystal system with space group P212121. The functional groups and the corresponding vibrational mode were confirmed using Fourier transform infrared (FTIR) and Raman spectroscopy, respectively. To study the optical properties UV–Vis transmission spectrum and photoluminescence (PL) were recorded. It was observed that the single crystal has a high value of transmission over a long range of wavelength which signifies that the crystal is a good candidate for nonlinear optical (NLO) applications. The UV cut-off wavelength is found to be 236 nm. The grown single crystals were studied by time-domain terahertz spectroscopy (THz-TDS) for photonic applications and the refractive indices were calculated and it is found that the refractive index is nearly equal to 3.4. Key words: Terahertz, powder x-ray diffraction, photoluminescence, single crystal, optical
INTRODUCTION Recently, nonlinear optical (NLO) crystals are of increasing importance and find a greater consideration because of their potential applications in terahertz (THz) generation, THz imaging & spectroscopy, laser amplifiers, ultrafast switches, optical devices, etc. in everyday life.1 Synthesizing,
(Received June 27, 2020; accepted September 25, 2020)
engineering, and designing these new nonlinear optical (NLO) materials are a major research focus for scientists and researchers.2 Among these materials, single crystals are one of the most prominent and outstanding NLO materials due to their prime optical quality. In this regard, amino acid-based single crystals are fascinating materials for NLO applic
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