نتایج جستجو برای: laser transition
تعداد نتایج: 441155 فیلتر نتایج به سال:
A novel single frequency fiber laser with more than 100 mW output is presented. Low noise and a coherence length of >75 km make this laser extremely useful in sensing, LIDAR, and coherent communication applications. @2003 Optical Society of America OCIS codes: (060.2320) Fiber optics amplifiers and oscillators; (140.3570) Lao;ers. single-mode; (140.5680) Rare earth and transition metal solid-st...
Er:YGG is a promising candidate for greenhouse-gas LIDAR due to fortuitous transitions around key absorption lines of carbon-dioxide and methane. We present growth of crystal films by pulsed-laser-deposition, their spectroscopy and initial characterization as amplifiers. OCIS codes: (310.0310) Thin films; (220.4610) Optical fabrication; (230.7390) Waveguides, planar; (130.0130) Laser materials;...
We report on a single-state measurement of electrical conductivity of warm dense gold in the solid to plasma transition regime. This is achieved using the idealized slab plasma approach of isochoric heating of ultrathin samples by a femtosecond laser, coupled with femtosecond probe measurements of reflectivity and transmission. The experiment also reveals the time scale associated with the disa...
Many potential industrial, medical, and environmental applications of metal nanorods rely on the physics and resultant kinetics and dynamics of the interaction of these particles with light. We report a surprising kinetics transition in the global melting of femtosecond laser-driven gold nanorod aqueous colloidal suspension. At low laser intensity, the melting exhibits a stretched exponential k...
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