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Erbium-Doped Fiber Amplifiers can present holes in spectral gain in Wavelength Division Multiplexing operation. The origin of this inhomogeneous saturation behavior is still a subject of controversy. In this paper we present both an experimental methods and a gain's model. Our experimental method allow us to measure the first homogeneous linewidth of the 1.5 μm erbium emission with gain spectral hole...
Glioblastoma multiforme (GBM), a highly malignant primary brain tumor, is difficult to distinguish from from its surrounding functioning tissue under direct vision in the operating field, since it grows in an infiltrative growth pattern. The main challenge in the surgical treatment of GBM is to fully resect the tumor and avoid neurological impairment. In this paper we extend previous proof-of-principle...
We presented the fluorescence correlation spectroscopy (FCS) based on two-photon microscopy system to access physical parameters that give rise to fluctuations in fluorescence signal. As given excitation volume, the diffusion coefficient of molecules due to Brownian Movement into or out of excitation volume is determined. Further, depended on autocorrelation analysis based on diffusion coefficients...
We have used a high-power, high-PRF laser to measure the relatively slower fluorescence lifetime of DPA by modeling the dynamic, time dependent population rate-equations of terbium doped dipicolinate in water. Good agreement was found.
The laser-induced fluorescence spectroscopy was used to investigate to investigate water stress in orange trees (Citrus aurantium LN). In our experiments, six three were under water stress conditions and four in regular conditions, as control. The fluorescence spectroscopy was investigated by using a 442-nm 15 mW He-Cd gas multimode discharge laser and 532-nm 10 mW Nd3+:YAG laser for fourteen days...
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