Ultraviolet lasing action in aligned ZnO nanowall

Kosuke Harada, Shihomi Nakao, Masahiro Takahashi, Mitsuhiro Higashihata, Hiroshi Ikenoue, Daisuke Nakamura, Yoshiki Nakata, Tatsuo Okada

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A vertically aligned ZnO nanowall arrays have been synthesized on a patterned ZnO buffer layer using an interference laser beam. The average height and thickness of the ZnO nanowall were 4 μm and 200 nm, respectively. Room-temperature ultraviolet (UV) lasing was obtained from single piece of ZnO nanowall detached from the substrate. The threshold power density for lasing was estimated to be about 80 kW/cm2. In addition, UV lasing from vertically aligned ZnO nanowall was also observed owing to the presence of holes. The lasing spectra had no regularity in the mode spacing and many different spatial modes, suggesting that the action was supported by the random lasing mechanism. The threshold power density for lasing was about 300 kW/cm2, which was much higher than that of the single piece of ZnO nanowall because of the leakage of the light into buffer layer.

Original languageEnglish
Pages (from-to)469-473
Number of pages5
JournalApplied Physics B: Lasers and Optics
Volume119
Issue number3
DOIs
Publication statusPublished - Jun 28 2015

Fingerprint

lasing
radiant flux density
buffers
thresholds
regularity
leakage
spacing
laser beams
interference
room temperature

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

Cite this

Ultraviolet lasing action in aligned ZnO nanowall. / Harada, Kosuke; Nakao, Shihomi; Takahashi, Masahiro; Higashihata, Mitsuhiro; Ikenoue, Hiroshi; Nakamura, Daisuke; Nakata, Yoshiki; Okada, Tatsuo.

In: Applied Physics B: Lasers and Optics, Vol. 119, No. 3, 28.06.2015, p. 469-473.

Research output: Contribution to journalArticle

Harada, K, Nakao, S, Takahashi, M, Higashihata, M, Ikenoue, H, Nakamura, D, Nakata, Y & Okada, T 2015, 'Ultraviolet lasing action in aligned ZnO nanowall', Applied Physics B: Lasers and Optics, vol. 119, no. 3, pp. 469-473. https://doi.org/10.1007/s00340-015-6103-3
Harada, Kosuke ; Nakao, Shihomi ; Takahashi, Masahiro ; Higashihata, Mitsuhiro ; Ikenoue, Hiroshi ; Nakamura, Daisuke ; Nakata, Yoshiki ; Okada, Tatsuo. / Ultraviolet lasing action in aligned ZnO nanowall. In: Applied Physics B: Lasers and Optics. 2015 ; Vol. 119, No. 3. pp. 469-473.
@article{56f4ac69634e46ceaa3b0b474da66080,
title = "Ultraviolet lasing action in aligned ZnO nanowall",
abstract = "A vertically aligned ZnO nanowall arrays have been synthesized on a patterned ZnO buffer layer using an interference laser beam. The average height and thickness of the ZnO nanowall were 4 μm and 200 nm, respectively. Room-temperature ultraviolet (UV) lasing was obtained from single piece of ZnO nanowall detached from the substrate. The threshold power density for lasing was estimated to be about 80 kW/cm2. In addition, UV lasing from vertically aligned ZnO nanowall was also observed owing to the presence of holes. The lasing spectra had no regularity in the mode spacing and many different spatial modes, suggesting that the action was supported by the random lasing mechanism. The threshold power density for lasing was about 300 kW/cm2, which was much higher than that of the single piece of ZnO nanowall because of the leakage of the light into buffer layer.",
author = "Kosuke Harada and Shihomi Nakao and Masahiro Takahashi and Mitsuhiro Higashihata and Hiroshi Ikenoue and Daisuke Nakamura and Yoshiki Nakata and Tatsuo Okada",
year = "2015",
month = "6",
day = "28",
doi = "10.1007/s00340-015-6103-3",
language = "English",
volume = "119",
pages = "469--473",
journal = "Applied Physics B: Lasers and Optics",
issn = "0946-2171",
publisher = "Springer Verlag",
number = "3",

}

TY - JOUR

T1 - Ultraviolet lasing action in aligned ZnO nanowall

AU - Harada, Kosuke

AU - Nakao, Shihomi

AU - Takahashi, Masahiro

AU - Higashihata, Mitsuhiro

AU - Ikenoue, Hiroshi

AU - Nakamura, Daisuke

AU - Nakata, Yoshiki

AU - Okada, Tatsuo

PY - 2015/6/28

Y1 - 2015/6/28

N2 - A vertically aligned ZnO nanowall arrays have been synthesized on a patterned ZnO buffer layer using an interference laser beam. The average height and thickness of the ZnO nanowall were 4 μm and 200 nm, respectively. Room-temperature ultraviolet (UV) lasing was obtained from single piece of ZnO nanowall detached from the substrate. The threshold power density for lasing was estimated to be about 80 kW/cm2. In addition, UV lasing from vertically aligned ZnO nanowall was also observed owing to the presence of holes. The lasing spectra had no regularity in the mode spacing and many different spatial modes, suggesting that the action was supported by the random lasing mechanism. The threshold power density for lasing was about 300 kW/cm2, which was much higher than that of the single piece of ZnO nanowall because of the leakage of the light into buffer layer.

AB - A vertically aligned ZnO nanowall arrays have been synthesized on a patterned ZnO buffer layer using an interference laser beam. The average height and thickness of the ZnO nanowall were 4 μm and 200 nm, respectively. Room-temperature ultraviolet (UV) lasing was obtained from single piece of ZnO nanowall detached from the substrate. The threshold power density for lasing was estimated to be about 80 kW/cm2. In addition, UV lasing from vertically aligned ZnO nanowall was also observed owing to the presence of holes. The lasing spectra had no regularity in the mode spacing and many different spatial modes, suggesting that the action was supported by the random lasing mechanism. The threshold power density for lasing was about 300 kW/cm2, which was much higher than that of the single piece of ZnO nanowall because of the leakage of the light into buffer layer.

UR - http://www.scopus.com/inward/record.url?scp=84938067904&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84938067904&partnerID=8YFLogxK

U2 - 10.1007/s00340-015-6103-3

DO - 10.1007/s00340-015-6103-3

M3 - Article

VL - 119

SP - 469

EP - 473

JO - Applied Physics B: Lasers and Optics

JF - Applied Physics B: Lasers and Optics

SN - 0946-2171

IS - 3

ER -