活塞是发动机的基本零件之一，发动机的寿命与它有关。活塞最薄弱的地方是上面的气环槽(在压缩环下)。为了提高其耐磨性，在放置气环处镶装一道由耐蚀镍合金、灰铸铁或钢制的环，但这种方法并不十分可靠(由于保证镶环与母体材料可靠联接十分复杂)。采用氩弧焊、等离子堆焊和电子束焊接时，由于很难得到均质强化层，没有解决气环槽的强化问题。因此，苏联汽车工业工艺科研所的专家们提出了自己的新方法——通过激光用耐磨配料将铝活塞环槽合金化。
The periodic ripple structures on wolfram and titanium surfaces are induced experimentally by linear polarized femtosecond laser pulses at small incident angles. The structural features show a material difference in the
Electro-optic (EO) ring resonator modulators have a number of communications and scientific applications, including analog optical links, optical signal processing, and frequency comb generation. Among the EO materials used to fabricate ring modulators, t
Transition metal dichalcogenides (TMDs) are successfully applied in fiber lasers for their photoelectric properties. However, in previous work, how to improve the modulation depth of TMD-based saturable absorbers (SAs) has been a challenging issue. In thi
使用聚焦激光辐射脉冲与含氘材料作用时产生的等离子体的研究结果，可制成适于小型中子发生器应用的氘核源。
在LiNbO3晶体中掺入ZnO,生长ZnO:LiNbO3晶体,当ZnO的掺入浓度高于6mol%时,晶体的抗光损伤能力提高两个数量级,与高掺MgO(
We report on the optical trapping and orientation of Escherichia coli (E. coli) cells using two tapered fiber probes. With a laser beam at 980 nm wavelength launched into probe I, an E. coli chain consisting of three cells was formed at the tip of probe I
We demonstrate a 1550-nm narrow-linewidth fiber ring laser with stable single polarization by using single-mode Er-doped fiber as active fiber and saturable absorber. A polarization-maintaining circulator is used to acquire single-polarization laser light
日本竹中电子工业公司研制出一种内藏放大器的多用途小型光纤传感器，并且已有商品出售。这种传感器在采用组装式专用集成电路的高性能放大器的同时，其体积也比以往的同类产品缩小到1/4，实现了小型化。另外，它可根据光源的类型分成三种。如,需要拟定远距离时，就用F3型红外发光二极管，需要检测微小物体或确定光度时，就用F3R型红色发光二极管,特别在检测红色光素时,它能获 得意想不到的效果；作彩色标记使用时，就用F3G型绿色发光二极管。