Open Science Research Excellence
@article{(International Science Index):http://waset.org/publications/10000867,
  title    = {Ultraviolet Lasing from Vertically-Aligned ZnO Nanowall Array},
  author    = {Masahiro Takahashi and  Kosuke Harada and  Shihomi Nakao and  Mitsuhiro Higashihata and  Hiroshi Ikenoue and  Daisuke Nakamura and  Tatsuo Okada},
  country   = {Japan},
  institution={Kyushu University},
  abstract  = {Zinc oxide (ZnO) is one of the light emitting materials in ultraviolet (UV) region. In addition, ZnO nanostructures are also attracting increasing research interest as buildingblocks for UV optoelectronic applications. We have succeeded in synthesizing vertically-aligned ZnO nanostructures by laser interference patterning, which is catalyst-free and non-contact technique. In this study, vertically-aligned ZnO nanowall arrays were synthesized using two-beam interference. The maximum height and average thickness of the ZnO nanowalls were about 4.5µm and 200 nm, respectively.UV lasing from a piece of the ZnO nanowall was obtained under the third harmonic of a Q-switched Nd:YAG laser excitation, and the estimated threshold power density for lasing was about 150 kW/cm2. Furthermore, UV lasing from the vertically-aligned ZnO nanowall was also achieved. The results indicate that ZnO nanowalls can be applied to random laser.
},
    journal   = {International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering},  volume    = {9},
  number    = {3},
  year      = {2015},
  pages     = {473 - 476},
  ee        = {http://waset.org/publications/10000867},
  url       = {http://waset.org/Publications?p=99},
  bibsource = {http://waset.org/Publications},
  issn      = {eISSN:1307-6892},
  publisher = {World Academy of Science, Engineering and Technology},
  index     = {International Science Index 99, 2015},
}