Origins of lasing emission in a resonance-controlled ZnO random laser

• Nakamura, Toshihiro

• Fujiwara, Hideki

• Niyuki, Ryo

• Sasaki, Keiji

• Ishikawa, Yoshie

• Koshizaki, Naoto

• Tsuji, Takeshi

• Adachi, Sadao

抄録

We investigate the origins of lasing emission in a scatterer-resonance-controlled random laser made of ZnO nanopowder over a wide temperature range (20–300 K). At higher temperatures (>150 K), the lasing emission appears around exciton recombination energies and the lasing threshold carrier density is comparable to the Mott density, indicating that the resonance-controlled random laser is going toward showing excitonic lasing; at lower temperatures, random lasing is caused by usual electron–hole plasma recombination because of the threshold carrier density being much larger than the Mott density.

収録刊行物

• New Journal of Physics

  New Journal of Physics 16 (9), 093054-, 2014-09

  IOP Publishing

キーワード

• ZnO
• exciton
• laser
• random structure
• Mott transition
• electron-hole plasma

詳細情報

• CRID: 1050282813993677952
• NII論文ID: 120005600750
• HANDLE: 2115/58541
• ISSN: 13672630
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
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  • CiNii Articles