Second harmonic generation in laser ablated zinc oxide thin films

H. Cao*, J. Y. Wu, H. C. Ong, J. Y. Dai, R. P.H. Chang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

182 Scopus citations


We have observed large second-order nonlinear optical response from zinc oxide (ZnO) thin films deposited on sapphire substrates by pulsed laser ablation. By comparing the second harmonic signal generated in a series of ZnO films with different crystallinity and thickness, we conclude that a significant part of the second harmonic signal is generated at the grain boundaries and interfaces.

Original languageEnglish (US)
Pages (from-to)572-574
Number of pages3
JournalApplied Physics Letters
Issue number5
StatePublished - 1998

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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