激光

The plastic buckling behaviors of the simulator shell under two conditions are compared: with a hole melten by certain amount of laser energy; with relatively large area in the shell thermally soften by theb same amount of laser energy.

对假定光斑内的激光能量完全用于蒙皮及带板熔融击穿时，以及同样激光能量用于较大面积蒙皮热软化时模拟件的屈曲情况进行了对比分析。

By introducing the time derivation of the intensity difference between the receiver and the transmittal, the messages can be decoded successfully.

通过引入接收器激光的强度输出与接收器激光的强度输入的差值对时间的微分，可以成功地实现对信号的解码。

A metastable helium atomic beam effused out of atom source is firstly cooled transversally by laser. This well-collimated atomic beam traveling through the light standing-wave whose direction is perpendicular to atomic beam is quenched, and channeling effect happens in atomic density distribution.

亚稳态原子束从原子源喷出后首先对其进行横向激光冷却，准直后的原子束穿过与之垂直的激光驻波场时发生淬火过程，原子的密度分布出现沟道化效应，给出基于光掩模制作纳米图形的基本原理、理论分析及模拟结果。

Passive; unactive; passivityregain the initiative;land oneself in a passive position; be thrown into passivity

开关 passive Qswitch 利用光学材料在某一激光波长的透过率取决于激光强度的现象来实现调Q的装置。

In addition,the unhomogeneous distribution of atmospheric density leads to refraction of ladar signals propagation,and turbulence in the atmosphere results in energy fluctuation in the cross-section,spread and drift of beams.

另外 ，由于大气密度分布不均匀导致激光沿光路上的折射，大气湍流效应导致光束横截面上能量分布起伏、光束扩展和漂移等，这些对激光雷光信号的传输产生一定的影响。

Treatment of presbyopia with Monovision may use unifocal contact lens, implantation of intraocular lens, photo refractive keratectomy, laser in situ keratomileusis, and conductive keratoplasty that is update and nonexcimer laser refractive surgery technique.

Monovision矫正方法常用于老视和老视前期患者，即一眼矫正看远，另一眼矫正看近，其机制是双眼间的模糊抑制，MV可应用于单焦点角膜接触镜，并且还可应用于人工晶状体植入术和PRK，LASIK等激光屈光手术中，以及目前最新的非激光手术—传导性角膜成形术。

The present dissertation gives experimental, theoretical and PIC simulative research on the plasma-filled two-stage backward-wave oscillator and free-electron laser . In experiment, both an unmagnetized plasmafilled and a magnetized plasma-filled RBWO-FEL are studied.

本文在国家&863&计划及国家自然科学基金的资助下，从实验、理论和粒子模拟三个方面全面深入地研究了等离子体填充的相对论返波管-自由电子激光产生高功率微波及激光的物理过程。

To meet the needs, a novel low-noise fiber laser with compound cavity structure is designed. The stable single-mode operation is realized by using a transient self-written fiber grating, produced by the effect of saturable absorption within a section of unpumped erbium-doped fiber, as narrow band filter for mode selecting and linewidth squeezing. Through optical path modification, the spectral signal-to-noise ratio is better than 62 dB.

激光器采用复合腔结构，以掺铒光纤作为工作物质，通过在未被抽运的掺铒光纤中形成的瞬态自写入光纤光栅的窄带滤波特性进行选模和压窄线宽，产生稳定的单频激光输出；经过光路改进，激光输出光谱信噪比优于62 dB；利用光电负反馈电路，弛豫振荡峰下降了约25 dB，低频段强度噪声也大为改善，有效地抑制了光源的强度噪声。

To realize single longitudinal-mode of the fiber laser, a ring configuration is devised. The single longitudinal-mode operation is realized by using a fiber Bragg grating as wavelength-selective element and a unpumped 2m-loog erbium-doped fiber which can produce stading-wave saturation effects in the cavity, Its tunable wavelength range is 42 nm, the output power is more than 3.5 dBm and the stability is less than ±0.005 dB.

为了实现光纤激光的单纵模，提出了一种环形腔结构，采用可调谐光纤Bragg光栅作为波长选择器件，与2m未抽运掺Er光纤产生驻波饱和效应，在1.55m波长处形成42nm激光输出，输出功率大于3.5dBm，功率稳定性优于士0.005dB。

A new type semiconductor laser self-mixing interference vibrometer system is presented.

基于激光自混合干涉技术的特点，设计了一种新型半导体激光自混合干涉测振仪系统。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新