On the second harmonic generation activity in centrosymmetric crystals

Srinivasan, B.R.; Parsekar, N.U.; Apreyan, R.A.; Petrosyan, A.M.

dc.contributor.author	Srinivasan, B.R.
dc.contributor.author	Parsekar, N.U.
dc.contributor.author	Apreyan, R.A.
dc.contributor.author	Petrosyan, A.M.
dc.date.accessioned	2019-08-21T05:08:39Z
dc.date.available	2019-08-21T05:08:39Z
dc.date.issued	2019
dc.identifier.citation	Molecular Crystals and Liquid Crystals. 680(1); 2019; 75-84.	en_US
dc.identifier.uri	https://doi.org/10.1080/15421406.2019.1624027
dc.identifier.uri	http://irgu.unigoa.ac.in/drs/handle/unigoa/5820
dc.description.abstract	The observation of second harmonic generation (SHG) signals, which is forbidden in centrosymmetric crystals, should necessitate clarification of their causes. The authors of a recent paper (Sivaraman et al Molecular crystals and Liquid crystals 656 (2017) 153-168) report to have grown a so-called crystal of diglycine zinc dipicrate which, in fact, is tetraaquabis(glycine)zinc(II) dipicrate dihydrate. This compound despite being centrosymmetric, was reported to exhibit a strong second harmonic response viz. 1.07 times of potassium dihydrogen phosphate. Based on a reinvestigation, we prove that the observation of SHG is due to dehydration of the crystal under laser irradiation.	en_US
dc.publisher	Taylor & Francis	en_US
dc.subject	Chemistry	en_US
dc.title	On the second harmonic generation activity in centrosymmetric crystals	en_US
dc.type	Journal article	en_US
dc.identifier.impf	y