This paper presents a design method of broadband radar absorber (RA) combing together the features of frequency selective surfaces (FSSs), subwavelength hole array and magnetic absorbing sheet.The abs
Epitaxial vanadium dioxide thin films with different thicknesses were deposited on Al2O3 (0001) substrates by using a polymer-assisted deposition technique.The metal-insulator transition of the films
Based on the equivalent circuit method, the effect of bias magnetic field and electrical resistance load on the magnetoelectric (ME) properties of Terfenol-D/PMN-PT/Terfenol-D laminate composites has
In this letter, we investigated the influence of the fast thermal treatment on the spin pumping in ferromagnetic insulator yttrium iron garnet (YIG)/normal metal Au bilayer system.The YIG/Au bilayer t
In this paper, a dual-band mid-infrared metamaterial absorber aims to improve the energy absorption efficiency was proposed.Up to 99% absorption is obtained at 9.03 and 11.83 μm in the simulation, and
Ferroelectric BaTiO3 (BTO) thin films on polycrystalline nickel (Ni) substrates with good dielectric, ferroelectric, piezoelectric properties and magnetoelectric coupling, show great potential in many
本研究在钛合金表面通过等离子喷涂和激光重熔复合技术制备纳米结构Al2O3-TiO2重熔涂层,重点研究激光工艺对重熔涂层中双模态组织的影响.研究表明，等离子喷涂纳米结构Al203-13wt.％TiO2涂层表现出独特的由完全熔化区和部分熔化区组成的双模态组织特征。激光重熔后，消除了等离子喷涂涂层的层状结构，获得了致密的重熔涂层。纳米结构重熔涂层传承了喷涂态涂层的双模态组织特征。纳米结构重熔涂层的平均硬
首次用Nd,Y:CaF2无序晶体作为激光增益介质,研制出了能够产生百飞秒的超短脉冲激光器,该激光器采用激光二极管泵浦,同时采用当前最普遍的半导体可饱和吸收体作为锁模元件.由于该无序晶体的荧光带宽到达了31nm,因此得到了103fs的最短的脉冲,该脉冲序列的重复频率约为100MHz,最终得到的锁模光谱为12nm,激光器输出的平均功率为89mW.在所有以Nd晶体作为增益介质的超快激光器中,得到的脉冲宽
本文介绍一种直接利用～1.13μm激光二极管(LD)泵浦的Ho:YAG透明陶瓷激光.实验用的Ho:YAG透明陶瓷体积为4.2×4.8×22 mm3,Ho3+掺杂浓度为1at.％.泵源是光纤耦合的激光二极管,波长为1.123～1.130μm,带宽为5nm.实验获得了波长为2099nm的激光输出,功率最大值达到1W,斜率效率为20.6％.在最大功率时,光束的质量因数约为4.