Abstract

A letter by Mohebi et al. [ Opt. Lett. 13, 649– 651 ( 1988)] claims that the large value of n2 of CS2 at 10 μm (2.2 × 10−10 esu) measured by that group is due to electrostriction as opposed to the Kerr effect-induced n2 of 2.1 × 10−11 esu. We compare contributions of different nonlinear mechanisms to n2 and find that absorption-induced thermal nonlinearity should have been dominant in that experiment.

© 1990 Optical Society of America

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