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The dual wavelength operation of a new type InGaAs-GaAs ridge waveguide distributed Bragg reflector lasers is realized.

对一种新型InGaAs-GaAS脊波导分布式Bragg反射半导体激光器双模运行特性进行了研究。

In the first part of the paper, the light source and its light output measurements are described. The second part is concerned with some investigations of ruby and Nd-doped glass lasers, pumped with electrodeless discharge tubes.

文章的前一部分包括光源的装置及特性的测量等，第二部分的内容为利用这种光源作红宝石与钕玻璃激光器的激发光源时，对于激光器的光输出特性的研究结果，其中包括阈值的测定，尖峯的观察、单模振荡和规则的阻尼振荡等。

However, the output beam quality of semiconductor laser is poor. Because of the waveguide properties of their active areas, semiconductor lasers generate large divergence-angle beams with elliptically shaped intensity profiles.

由于半导体激光器的结构特点，使得它发出的光束在垂直于结平面方向上远场发散角和平行于结平面方向的远场发散角相差较大(在垂直和平行于结平面方向上的发散角大小分别在30°左右和10°左右)。

And then, a window-type novel x-ray crystal spectrometer was put forward based on the elliptically curved crystal analyzer. It was coupled to an x-ray CCD camera, and a set of system had been designed and constructed. The spectrograph is useful in the experiments of x-ray diagnostics, for example in x-ray lasers, inertial confinement fusion, laser-matter interaction, and so on.

本论文从X射线晶体衍射和椭圆自聚焦几何光学原理出发，剖析追究了椭圆型弯曲X射线晶体谱仪在实际应用中产生问题的根源，率先从技术上提出解决目前椭圆型弯曲X射线晶体谱仪存在问题的思路，论证了其相应实施方案的可行性。

The measured dependence of threshold current of DH lasers with temperature is found to obey an exponential law near room temperature.

测量GaAs—GaAlAs双异质结激光器阈值电流随温度的变化，表明在室温附近符合指数规律。

The results of a two rod plane plane resonator used for high power solid state lasers are extended to multirod plane plane resonators.

将高功率固体激光器使用的二棒平行平面腔的结果推广到多棒平行平面腔。

In the experiment,by adjusting the manual tunable fiber Bragg grating and control the transmission of the light through the filter band,the operating center wavelength of the fiber lasers could be tuned from 1 047 nm to 1 055 nm and pulse duration at a repetition rate of 4.9 MHz.

实验中，在保证锁模状态稳定的情况下，通过调节可调谐光纤光栅滤波器，使激光器输出锁模脉冲的中心波长在1 047 nm～1 055 nm范围内连续调谐，重复频率稳定维持在4.9 MHz。

Fly in your space ship, fire lasers, homing missiles and destroy enemy bosses.

粉煤灰在你的飞船，火激光，制导导弹和摧毁敌方的老板。

Its optical efficiency was much higher than that of flash lamp as pump light source, which shows that liquid lasers has the outlook to high power laser systems.

其光－光转换效率高出闪光灯泵浦液体条件下2个数量级，说明该激光体系具有向高能激光体系发展的前景。

Obtained by fractional distillation of liquefied air, it is used in luminescent tubes, flash lamp s, lasers, and tracer studies and as an anesthetic.

用于频闪仪和高摄影术所用的极短促而强烈的闪光灯中。氙闪光灯已用于活化红宝石的激光器。仅与氟和氧化合生成。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。