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The comprehensive test technology for laser peak power parameter is investigated based on the characteristics of wavelength, power, and pulse width of pulse laser transmitted from laser transmitting sets operating in several common wavebands.

针对几种常见波段脉冲激光发射机所发出的脉冲激光波长、功率和宽度等特点，进行了激光峰值功率参数的综合测试技术研究。

Soft X ray laser radiation ranged from 40 nm to 110 nm is obtained by the 7th to the 19th order harmonic generation in krypton with femtosecond Ti∶sapphire laser operating at 780 nm, and the same phenomena especially the spectral shift is observed after the central wavelength of Ti∶sapphire laser is tuned to 795 nm.

利用中心波长在 780nm线偏振的掺钛蓝宝石超短脉冲激光，在氪气中观察到 40nm～ 110nm第 7～ 19次谐波的软X射线激光辐射，把中心波长调至 795nm时再次观察到相同的现象，特别是观察到谱线的移动，证实观察到的谱线是高次谐波，实验中还观察了谱线强度随气压的变化规律。

The CopperHead Laser Screed works by using the same basic laser control system as the "big" laser screeds.

熨平的铜斑蛇激光工程作为&大&激光找平相同的基本激光控制系统。

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）。

Products such as DVD players, laser range finders, electro-optical distance measuring instruments, laser planers, laser line projectors, etc. rank the first in our country; products like diodes and micro special motors rank the second; fixed inductors and chip inductors rank the fourth.

产品，如DVD播放机，激光测距仪，光电距离测量仪器，激光刨床，激光线投影仪，等排名第一，我国；产品，如二极管和微型特殊电机排名第二；固定电感器和片式电感排名第四。

And laser technology development with the Department of Engineering Technology Research Center, is a professional production of CO2 laser tube, laser power, optical lenses of the joint-stock enterprises.

设 有技术开发部和激光工程技术研究中心，是专业生产 CO2激光管、激光电源、光学镜片的股份制企业。

The theories of cuneiform prism and series neutral glass slices used as laser attenuator are analyzed in this paper. An aberration-free laser quantitative attenuator made of cuneiform prism is adopted and a series of neutral attenuated slices are used for adjusting laser-beam enegy at the same time.

分析了楔形镜和中性玻璃衰减片组对光束的衰减原理，采用反射式楔形镜作为无像差定量衰减器，并同时使用中性玻璃衰减片组微调光束能量。

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 experimental method, the effects of different laser energy, different shock times and shock paths on TA2 round sheet forming were analyzed by the aid of a neodymium glass laser with pulse energy 35J, FWHM 23ns, laser wavelength 1.06 μm, effective spot diameter 8mm, pulse repetitious rate 2Hz.

采用实验的方法，研究了不同的激光能量和不同的冲击路径、冲击次数对TA2钛合金圆板变形的影响，取得了不同冲击条件下钛合金圆板的变形数据。

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。

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切