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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 | exciton | laser | 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. |
Rights: | http://creativecommons.org/licenses/by/3.0/ |
Type: | article |
URI: | http://hdl.handle.net/2115/58541 |
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)
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Submitter: 藤原 英樹
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