We experimentally demonstrated optical wireless power transfer (OWPT) using a near-infrared laser diode (LD) as the optical power transmitter. We considered a photovoltaic (PV) cell and a photodiode (PD) as the optical power receivers. We investigated the
Pulse shaping and phase control of femtosecond pulses are shown to have effect on the dielectric breakdown of sapphire. The influence of a pulse tilt on a dielectric breakdown is demonstrated. Three-dimensional structuring of transparent dielectric and se
Doppler spectrum width, which relates to wind turbulence, is one of the essential parameters of coherent LIDAR. Using the Fourier transform theorem and the definition of correlation function, the power spectrum function in the stationary condition is dedu
提出并数值分析了基于混合表面等离子激元(HSPPs)的新型金属-介质-金属(MDM)波导,这种波导是由介质纳米线两侧的金属三角楔形结构构成。在通信波长1.55 mm 情形下,基于有限元方法(FEM)进行了分析和数值计算,计算结果表明光波能够被限制在超深亚波长区域,并且相比于没有三角楔形的波导结构具有更长的传播长度。更进一步的研究显示出该三角形半导体波导具有尖端增强效应,在三角楔形的顶角为120°时,其传播长度提高了18%且模式面积减小为原来的65%,因此这种混合表面等离子激元波导可应用于激光器、耦合器以及