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We demonstrate dynamic modulation of a hybrid plasmonic-photonic crystal nanocavity through using monochromatic coherent acoustic phonons formed by ultrahigh-frequency surface acoustic waves to achieve strong optomechanical coupling. As a result, optical resonance wavelength shift and a large modulation bandwidth are shown at telecommunication wavelength for the hybrid nanocavity.
We investigate the enhancement of acousto-optic (AO) coupling using a Ag/GaAs heterogeneous phoxonic crystal nanobeam cavity. Because of the Ag layer, the cavity structure hybridizes surface plasmons and photons, squeezing the optical energy into a smaller region near the GaAs/Ag interface. The photonic cavity modes highly match the phononic cavity modes in space in the cavity. Because of the mode...
Multiple scattering within a mixed pixel results in a nonlinear effect on the measured spectra in remotely sensed imagery. This study provides a quantitative assessment of multiple scattering in the reflectance of semiarid shrublands and explores its relationship to the characteristics of shrubs (density and height) and imaging parameters (wavelength and viewing angles). Field measurements were conducted...
In this work, we present a measurement-guided pattern optimization scheme directed towards maximizing signal-noise-ratio in tomographic measurements by reducing the dynamic range in transmitted signal intensity in small animal models.
Scaling of high order harmonic generation (HHG) efficiency with drive-wavelengths is investigated using 800-nm and 400-nm pulses. We demonstrate good agreement with a recently established model for HHG taking laser and material parameters into account.
We demonstrate a THz-biochip integrated with a compact high-efficiency micro-THz source with tunable THz frequencies for direct, sensitive, localized label-free bio-sensing. The capability to identity different illicit drug powders is successfully demonstrated.
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