open access

https://hdl.handle.net/2115/56677

Ultraviolet random lasing from a diamond nanoparticle film

英語

2014-07-08

Applied physics letters

105(1)

011112-1-011112-3

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.

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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 http://dx.doi.org/10.1063/1.4889080

0003-6951

1077-3118

AA00543431