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Conferences > CLEOPR > 2011 > PCNC > C731
  • Proceedings of the International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim 2011
  • (Optica Publishing Group, 2011),
  • paper C731

Lasing Characteristics from Optically-pumped ZnO Nanocrystals for Ultraviolet Laser Diode

K. Okazaki, D. Nakamura, M. Higashihata, and T. Okada

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Abstract

The lasing characteristics of a single ZnO nanowire and nanosheet were investigated for an application to ultraviolet laser diode. ZnO nanowires and 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 from both a single ZnO nanowire and nanosheet showed the obvious lasing characteristics having mode structure and a threshold for lasing which were measured to be 80 kW/cm2, and 47 kW/cm2. Those threshold would be low enough for lasing by an electrical pumping for ultraviolet laser diode.

© 2011 AOS

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