Directional emission and universal far-field behavior from semiconductor lasers with limaçon-shaped microcavity
We report experimental demonstration of directional light emission from limaçon-shaped microcavity semiconductor lasers. Quantum cascade lasers (QCLs) emitting at 10 µm are use...
We report experimental demonstration of directional light emission from limaçon-shaped microcavity semiconductor lasers. Quantum cascade lasers (QCLs) emitting at 10 µm are use...
Direct measurement of transient electric fields induced by ultrafast pulsed laser irradiation of silicon
We use 30 kV electron pulses to probe transient electric fields above silicon surfaces by pump-probe. Electron beam deflection at 0.29 mm away from the sample surface on the order of 10−2 &...
We use 30 kV electron pulses to probe transient electric fields above silicon surfaces by pump-probe. Electron beam deflection at 0.29 mm away from the sample surface on the order of 10−2 &...
Excitation of propagating surface plasmons by a periodic nanoparticle array: Trade-off between particle-induced near-field excitation and damping
Appl. Phys. Lett. 94, 251102 (2009); doi:10.1063/1.3156862
Published 22 June 2009
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The excitation of propagating surface plasmons (SPs) on a silver-silica interface by an array of ellipsoidal silver nanoparticles is investigated using numerical simulations as a function of particle volume for three different nanoparticle aspect ratios with representative resonance frequencies. We find that while the SP amplitude depends sensitively on particle volume for each selected aspect ratio, the maximum SP amplitude obtained for the different particle shapes is remarkably similar. These observations are explained in terms of particle-mediated SP excitation, counteracted by a size dependent particle-induced damping. An analytical model is presented that quantitatively describes the observed trends in SP damping.
©2009 American Institute of Physics
| History: | Received 10 December 2008; accepted 28 May 2009; published 22 June 2009 |
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http://link.aip.org/link/?APPLAB/94/251102/1 |
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REFERENCES (14)
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