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

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Title: Origins of lasing emission in a resonance-controlled ZnO random laser
Authors: Nakamura, Toshihiro Browse this author →KAKEN DB
Fujiwara, Hideki Browse this author →KAKEN DB
Niyuki, Ryo Browse this author
Sasaki, Keiji Browse this author →KAKEN DB
Ishikawa, Yoshie Browse this author →KAKEN DB
Koshizaki, Naoto Browse this author →KAKEN DB
Tsuji, Takeshi Browse this author →KAKEN DB
Adachi, Sadao Browse this author →KAKEN DB
Keywords: ZnO
random structure
Mott transition
electron-hole plasma
Issue Date: Sep-2014
Publisher: IOP Publishing
Journal Title: New Journal of Physics
Volume: 16
Issue: 9
Start Page: 093054
Publisher DOI: 10.1088/1367-2630/16/9/093054
Abstract: 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.
Type: article
Appears in Collections:電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 藤原 英樹

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