Lasing characteristics of ZnO nanosheet excited by ultraviolet laser beam

Kota Okazaki, Kazuki Kubo, Tetsuya Shimogaki, Daisuke Nakamura, Mitsuhiro Higashihata, Tatsuo Okada

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The lasing characteristics of ZnO nanosheets were investigated for an application to ultraviolet laser diode. ZnO nanosheets were synthesized on a silicon substrate by a CVD method, and then those ZnO nanosheets were examined by a photoluminescence method with a third-harmonic Nd:YAG laser (355 nm, 5 ns). The observed emission spectra showed the obvious lasing characteristics having mode structure and a threshold for lasing. The threshold power density of a ZnO nanosheet was measured to be 40 kW/cm2, and it would be low enough to be oscillated by an electrical pumping for ultraviolet laser diode.

Original languageEnglish
Pages (from-to)354-357
Number of pages4
JournalAdvanced Materials Letters
Volume2
Issue number5
DOIs
Publication statusPublished - Nov 2011

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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