Large second harmonic response in ZnO thin films

Gang Wang*, G. T. Kiehne, G. K.L. Wong, J. B. Ketterson, X. Liu, R. P.H. Chang

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

91 Scopus citations


The second-order susceptibilities in the ZnO films have been studied systemically. In very thin films, we observe an enhancement of second-order susceptibilities, which is larger than that of single-crystal ZnO. It was also observed that the second-order susceptibilities for ZnO films depend on the thickness but not on the film growth technique used (reactive sputtering or plasma-enhanced chemical vapor deposition). We suggest a mechanism to explain the reduction in the second-order susceptibilities of the thicker films.

Original languageEnglish (US)
Pages (from-to)401-403
Number of pages3
JournalApplied Physics Letters
Issue number3
StatePublished - Jan 21 2002

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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