激光

After removing the plane-parallel cavity, the seed pulse energy is about 8 mJ from the grating cavity and the energy is boosted to 60mJ with additional double pass amplification and extender telescrope. And the line-width of the seed pulse is 0.6 cm-1, near the diffraction limit, and meets the demand of the following amplification.

实验获得了8 mJ的主振荡器激光能量输出，经过双程放大和望远镜扩束后输出激光能量达60 mJ，线宽为0.6 cm-1，光束发散角接近衍射极限，满足了后续放大需要。

After removing the plane-parallel cavity, the seed pulse energy is about 8 mJ from the grating cavity and the energy is boosted to 60mJ with additional double pass amplification and extender telescrope.

实验获得了8 mJ的主振荡器激光能量输出，经过双程放大和望远镜扩束后输出激光能量达60 mJ，线宽为0.6 cm-1，光束发散角接近衍射极限，满足了后续放大需要。

Fittings series lasers have: a dedicated optical laser lens (spherical and non-spherical), laser diode driver circuit boards and with TTL modulation drive plate, laser-specific power supply (with a soft-start and reverse polarity protection).

激光器配件系列有：激光专用光学透镜、激光二极管驱动电路板及带TTL调制驱动板、激光器专用电源（具有软启动及极性反接保护）。

In this paper, the application, research and development of the laser infrared projectors are reviewed.

由于激光技术的快速发展，激光型投影仪的发展也因此具有强劲的势头和宽广前景。

In this paper, mainly introduced laser power meter basic composition, and design two project for the measurement of laser power.

在本文中，主要是介绍了激光功率计基本组成，并设计出两个方案用于大功率激光的测量。

Our company is specializing in the laser tube, laser power, focusing mirror, mirrors the development and production of high-tech enterprises.

我公司是专业从事激光管、激光电源、聚焦镜、反射镜的研制和生产的高新技术企业。

Numerical simulation and experimental investigation of multiple-irradiation laser bending process of thick steel plate were presented.

采用数值模拟和实验研究分析了厚钢板激光多次扫描弯曲成形过程中弯曲角度与激光扫描次数之间的关系。

Based on Wavelet Packet Analysis and Smoothed Pseudo Wigner-Ville Distribution, the experiment data is time-frequency analyzed.

结果表明：该等离子体声波强度随激光能量的增大而增大；频率范围在0-150KHz，在频率为25KHz附近有一峰值；且频率范围和峰值位置基本不随作用激光能量以及靶材料的改变而改变。

Based on Wavelet Packet Analysis and Smoothed Pseudo Wigner-Ville Distribution, the experiment data is time-frequency analyzed. The experimental results indicate that the amplitude of the laser-induced acoustic waves increases with the laser energy; the frequency coverage is from 0 to 150 KHz, and in the meantime there is a peak located at about 25 KHz. In addition, the spectrum and the peak of frequency are basically stable in spite of the change of laser energy and target texture.

从基本的空泡动力学理论出发，推导了空泡各特征参量之间的关系，进而对空泡动力学模型进行了修正；采用有限差分法对空泡脉动进行数值模拟，得到了空泡脉动特性随液体粘性、空泡含气量、表面张力以及可压缩性的变化规律；实验上采用光偏转测试装置探测了激光空泡脉动以及空泡溃灭的细节过程，进而分析了液体粘性和作用激光能量对空泡脉动周期、泡半径及泡能等特征参数的影响。

Using a neodymium glass laser with pulse energy 35 J, FWHM 20 ns, laser wavelength 1.06μm, effective spot diameter 8mm, pulse repetitious rate in the range of 1Hz～20Khz and Using a ABAQUS software, an experimental study and numerical simulation on laser - shock forming of titanium sheet metal were carried out respectively.

笔者利用激光冲击波技术对钛合金板料进行了成形实验，所采用的激光波长为1.054μm，脉宽约23ns，能量35J左右，有效光斑直径为8mm，脉冲的重复率为0.5Hz。

On closer examination, though, this is not a vote for multilateralism but just the opposite.

仔细审视后我们发现，这并非是对多边主义投出的赞成票，而是恰好相反。

Uncovering their weak spots, so I can defeat them.

揭露出他们的弱点，这样我就可以打败他们了。