Stable continuous-wave passive mode-locking of diode-end-pumped Nd:GdVO_(4) and Nd:YAG lasers with semiconductor saturable absorber mirrors (SESAMs) are reported. The comparative study shows that the Nd:GdVO_(4) crystal is efficient to decrease the Q-swit
研究了伽玛辐照效应对SiGe异质结双极型晶体管的集电极电流和厄尔利电压的影响。经过104 Gy的伽玛总剂量辐照后, 集电极电流和厄尔利电压均增加。另外, 辐照后发射结和极电结的开启电压和击穿电压也均有一定程度的减小。以上这些变化均是由于辐照产生的缺陷引起发射区和集电区有效掺杂浓度减小所致。
In this study, a novel rectangular polymer single-mode optical fiber for femtosecond (fs) laser-inscribed fiber Bragg gratings (FBGs) is proposed and demonstrated. The cylindrical geometry of the widely used circular fiber elongates the fs laser beam alon
With European Laser Facilities such as the Extreme Light Infrastructure (ELI) and the Helmholtz International Beamline for Extreme Fields (HIBEF) scheduled to come online within the next couple of years, General Atomics, as a major supplier of targets and
In this paper, we report a passively mode-locked
二维激光多普勒测速一般使用氩离子激光器的蓝线(488 nm)和绿线(514.5 nm)，每种线都以单纵模运转。一般情况下，装有适于两种谱线的干涉滤光片的两台光探测器与双通道电子设备结合。通过测量体积，这种技术能够区分沿两条轴的流速，并能测定局部流场速度三个分量中的两个。
A wet chemical etching process for lead zirconate titanate (PbZrxTi1?xO3 or PZT) thin films is reported. The influences of the etchant compositions, temperatures, and concentrations on the etching rate are studied, and the patterning of PZT thin films is
We report experimental progress in weakening the frequency difference lock-in phenomenon in a Y-shaped cavity dual-frequency laser. A cube coil pair is chosen to provide a uniform magnetic field for tunability and uniformity of magnetic field strength. Wh