Comments on the paper "Growth, structural, optical and thermal studies of semi-organic nonlinear optical potassium hydrogen oxalate single crystal"

Srinivasan, B.R.

Comments on the paper "Growth, structural, optical and thermal studies of semi-organic nonlinear optical potassium hydrogen oxalate single crystal"

Srinivasan, B.R.

Source : Applied Physics A: Materials Science and Processing. 127(2); 2021; ArticleID_105.

URI: https://doi.org/10.1007/s00339-020-04252-4
http://irgu.unigoa.ac.in/drs/handle/unigoa/6346

Date: 2021

Document Type: Journal article

Abstract:

The authors of the title paper (Appl Phys A 126:394, 2020) report to have grown a new nonlinear optical potassium hydrogen oxalate (KHO) single crystal, which exhibits second harmonic generation response. In this comment, it is shown that these claims are erroneous since KHO is a well-known solid which crystallizes in the centrosymmetric P2 sub(1)/c space group.

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