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So oxyfluoride materials are highly desirable materials for optical amplification, up-conversion lasers and display devices.

本论文，我们采用溶胶—凝胶法成功制备了一系列Er~(3+)掺杂的透明纳米LaF_3—SiO_2玻璃—陶瓷样品。

The results showed that Yb~(3+)-sensitized Tm~(3+)-doped oxyhalide tellurite glasses can be used as a kind of potential host materials for upconversion blue lasers .

结果表明Yb3+敏化Tm3+掺杂氧卤碲酸盐玻璃是一种上转换蓝光激光器的潜在基质材料。

This research on spectral properties and crystallization stability of Er3+-doped heavy metal oxyfluoride glasses and upconversion luminescence of rare earth-doped heavy metal oxyhalide glasses lay a foundation for the potential use of broadband Er3+-doped fiber amplifier, blue and green lasers.

通过对掺Er3+重金属氧氟玻璃的光谱性质和析晶稳定性研究以及稀土离子掺杂重金属氧卤玻璃的上转换发光研究，为其在宽带掺Er3+光纤放大器和蓝绿光波段激光器中的潜在应用提供基础。

Photoemissive materials are now used forgenerating high brightness electron bea■s.Drivenby short-pulsed laser,these new cathodes willmeet the requirment of large rf-driven freeelectron lasers.

为了满足射频直线加速器及其驱动的大功率自由电子激光器研究的需要，以脉冲激光激发光电发射材料产生高亮度电子束的研究正日益受到重视。

The history and actuality of the two technical schemes are introduced in detail for the pyrotechnically pumped lasers. The influence of pyrotechnic performance on the laser energy is studied.

详细介绍了烟火抽运激光器两种技术方案的研究历史和现状，以及烟火药剂性能对激光能量的影响，综述了目前的研究进展，分析了烟火抽运激光器可能的发展方向。

Four laser beams used for ~ 40 K and ~ 87 Rb cooling and repump lights are obtained by using acoustic optic modulators to offset the frequencies from the three external cavity diode lasers.

三台ECDL通过声光调制器产生四束光，分别作为40K和87Rb原子的冷却光和再抽运光，四束不同频率成分的激光分别注入锁定四台从激光器，然后Rb冷却光、K冷却光和K再抽运光再同时注入半导体激光放大器进行放大。

It is demonstrated that the frequency drift will break up the phase-locked state of the laser array and induce the spatial instability of the far-field intensity due to phase noise. It is also found that although the evanescent coupling between elementary lasers can restrain these effects to some extent, the restrainability is too limited to be effective when the frequency drift is relatively strong.

通过对耦合激光器阵列动力学方程的数值研究发现，频率漂移将破坏激光器阵列的锁相状态，并引入相位噪声，导致输出远场光强分布不稳定；研究还发现：倏逝波耦合能够对频率漂移的影响起到一定的抑制作用，但这种抑制只在频率漂移较弱时才有效，因此，如果将该阵列用于光束合成，加入相应的抗干扰措施还是很必要的。

The principles, development and application of semiconductor saturable absorbers when they used in KLM lasers were described.

较为详细地阐述了半导体可饱和吸收器件的工作原理、发展过程、及其在KLM激光器中的应用。

In this paper, the threshold behaviours of the self-pulsing instability for the class B lasers with saturable absorber are studied.

对含有可饱和吸收体的B类激光系统的自脉冲不稳定性的阈值行为进行了研究，并就各种激光参量对其阈值的影响进行了数值计算。

The basic structure and the fundamental principle of semiconductor saturable absorption mirrors that are used for passive mode-locking solid-state lasers are introduced.

介绍了半导体可饱和吸收镜的基本结构及使用半导体可饱和吸收镜被动锁模固态激光器的基本原理。

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