钕玻璃激光器的极限效率

来源 :激光与光电子学进展 | 被引量 : 0次 | 上传用户:tp13140
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
其他文献
The layer structure of GaInP/AlGaInP quantum well laser diodes (LDs) was grown on GaAs substrate using low-pressure metalorganic chemical vapor deposition (LP-MOCVD) technique. In order to improve the catastrophic optical damage (COD) level of devices, a
In this Letter, a new, constrained color-matching algorithm that removes the color variations is presented, in which all the color gamut of the projectors is mapped into a common gamut that can be produced by all the devices in the system. The smoothness
A silver quadrumer consisting of four parallel aligned rectangular nanobars, with three at the bottom and one at the top, is proposed to provide two Fano resonances. These two resonances can be adjusted either simultaneously or independently simply by tun
定相列阵天线由许多(可达数千)按其方向图排列的单偶极子天线组成。在这种天线中,供给任一个单元的射频信号在相位上都不同于供给其他单元的信号,而这种相位差可加以适当调整,以便辐射出一个精确的、可偏转的(锥形)波束。用电子学方法产生这种信号要求非常复杂的设备。这个任务(至少在理论上)可以用一台激光器和有关的光-声器件来更为简单地实现。
期刊
In order to determine the appropriate treatment interval, 267 patients who underwent 3 sessions of treatment with Q-switched alexandrite laser were divided into 4 groups according to treatment interval, and their clinical responses were compared. Among th
为了寻找产生怪波的原因和本质方法,文章采用快速分步傅里叶算法,找到了激发怪波串的一种方法。研究发现:如果选择平面波背景上增加微小的怪波扰动作为初始波在非线性薛定谔方程中传输演化后能激发大量的怪波串。并且平面波背景和微扰项是初始波形成怪波串的必要条件。文章分别对一阶怪波、二阶怪波和三阶怪波微扰后作为初始波进行了传输研究,并研究了微扰项对怪波强度的影响和微扰项的取值范围。
光折变晶体内部产生的光致折射率的变化很小,不易实时观测,导致对写入晶格的质量无法鉴定。为了实时观测光折变光子晶格写入导致的更细微的光致折射率的时间和空间的变化,提出了在马赫-曾德尔光路的基础上引入放大的傅里叶变换的观测方法,极大地提高了测量的分辨率。该方法可以实时观测写入高密度光子晶格折射率的时间和空间变化,同时可以鉴定光子晶格的质量和均匀度,解决了高密度光子晶格制作质量的时间把控问题。与间接方法相比,该方法更加直观明了,所测数据更加准确、清晰,分辨率可方便地由傅里叶变换透镜的组合决定。
期刊
期刊
A 1550 nm all-fiber pulsed laser Doppler vibrometer (LDV) based on time-domain chopping techniques is developed to overcome demodulation failures caused by multipath interference. The system adopts an adjustable configuration on pulse duration and pulse r