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Ultraviolet random lasing from a diamond nanoparticle film

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Title: Ultraviolet random lasing from a diamond nanoparticle film
Authors: Niyuki, Ryo Browse this author
Takashima, Hideaki Browse this author
Fujiwara, Hideki Browse this author →KAKEN DB
Sasaki, Keiji Browse this author →KAKEN DB
Issue Date: 8-Jul-2014
Journal Title: Applied physics letters
Volume: 105
Issue: 1
Start Page: 011112-1
End Page: 011112-3
Publisher DOI: 10.1063/1.4889080
Abstract: We demonstrated ultraviolet random lasing from a diamond nanoparticle film, in which commercially available diamond nanoparticles with an average size of 25 nm acted as the gain medium and scatterers. By optically exciting the diamond nanoparticle film at an excitation wavelength of 355 nm, discrete sharp peaks, superposed on a collapsed broad emission spectrum, randomly appeared at wavelengths around the broad emission maximum (∼382 nm) when the excitation intensity exceeded the threshold. From the dependence of lasing peak intensities measured at different locations as a function of excitation intensity, the threshold was estimated to be approximately several tens of MW/cm2.
Rights: Copyright 2014 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters 105, 011112 (2014) and may be found at
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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