激光二极管侧面泵浦的高效率Nd：YAG激光器

用准连续激光二极管列阵侧面泵浦Ｎｄ：ＹＡＧ固体激光器，获得３９．５ｍＪ的静态输出，器件重复频率为５０Ｈｚ，效率最高达３９．５％，对该器件进行了细致的实验研究，验证了理论计算的正确性，并对实验结果进行了分析。     

激光二极管泵浦单频连续工作的Nd：YAG激光器

在国内首次报道了激光二极管泵浦单频连续工作的Ｎｄ：ＹＡＧ激光器，采用扭摆模腔技术方法，在８０８ｎｍ激光二极管连续泵浦下，取得１０６４ｎｍ连续单频工作，输出功率５５ｍＷ的结果，泵浦阈值２７６ｍＷ，斜率效率２３％，线宽小于２５ＭＨｚ（受仪器测量精度限制）。     

Large-aperture end-pumped Nd：YAG thin-disk laser directly cooled by liquid

A large-aperture Nd:YAG thin-disk laser directly cooled by liquid is end-pumped by two spatial selforganized laser diode arrays. The pump coupling efficiency reaches as high as 93%. Without any complex pump coupling components, the structure becomes simplified and compact. By optimizing the incident angle of the pump beam, a pump power density of 578 W/cm2 is achieved with a pump uniformity of 5.52%. Up to 1 346-W peak output power with a slope efficiency of 54.9% is obtained when pumping with a long pulse. The near-field pattern of the laser output is uniform.     

High-Efficiency High-Power Nd：YAG Laser under 885 nm Laser Diode Pumping

A high-efficiency high-power Nd：YAG laser under 885 nm laser diode （LD） pumping is demonstrated. The laser crystal is carefully designed, and the overlapping between the pump modes and the laser modes is optimized. The maximum output power at 1064 nm is 87W under the absorbed pump power 127.7 W, corresponding to a slope efficiency of 72.4% and an optical-optical efficiency of 68.1%. The optical-optical efficiency is 58.4% for the pump power emitted directly from the LD. To our best knowledge, this is the maximal optical-optical conversion efficiency obtained for the LD end-pumped Nd：YAG lasers so far.     

二极管泵浦的高效连续波基横模Nd：YAG激光器

报道了用激光二极管端面泵浦的高效连续波ＴＥＭ００模Ｎｄ：ＹＡＧ激光器，最大输出为０．６５Ｗ，斜效率５１％，光－光效率最高达４０．６％，并给出了耦合光学系统和二极管泵浦Ｎｄ：ＹＡＧ激光器的器件结构．     

激光二极管泵浦Nd：FAP激光器

报道激光二极管泵浦的掺钕氟磷酸钙固体激光器，该器件在重复频率为１００Ｈｚ的准连续状态下运行，当耦合输出透过率为８％时，得到３１％的斜效率，比较了ＦＡＰ和ＹＡＧ这两种介质的激光器的性能，理论分析得出的两者的阈值泵浦功率的相对值与实验结果相一致，并证实ＦＡＰ是一种有前途的适合激光二极管泵浦的激光介质。     

Passive mode locking of a Nd：YAG laser with co－doped Nd, Cr：YAG as saturable absorber

We demonstrate the characteristics of relatively low saturation intensity using co-doped Nd, Cr:YAG as saturable absorber for passively mode locking the Nd:YAG laser. The difference of the saturation intensity between Q-switched and mode-locked operation in co-doped Nd, Cr:YAG was only one to two orders of magnitude, while Cr:YAG was generally reported at a difference of five orders of magnitude. More than 80% mode locking modulation depth was achieved at an incident pump power of 4.4W, corresponding to an intracavity intensity of 6×10^4W/cm^2, using a 68cm long plano-concave cavity.     

激光二极管泵浦的高重复频率Nd：YAG激光器

报道两个１．５Ｗ连续激光二极管端面泵浦的声光调ＱＮｄ：ＹＡＧ激光器，输出激光脉冲的最高重复频率为３０ｋＨｚ重复频率１ｋＨｚ时，最窄脉宽为１２ｎｓ，最高峰值功率为１２．１ｋＷ。     

20W腔外倍频全固态Nd：YAG绿光激光器

研制了一台高光束质量的全固态Nd:YAG激光器,采用KTP腔外倍频,获得了大于20 W准连续绿光输出,峰功率可达1.15×10 5 W,光束质量因子M2值约为4。     

LD泵浦Nd：YAG激光器的强度噪声特性研究

本文在理论研究了ＬＤ泵浦Ｎｄ：ＹＡＧ激光器的强度噪声特性，用传递函数的形式给出各种噪声湿源对激光器强度噪声的影响，计算结果指出，Ｎｄ：ＹＡＧ激光器输出的激光并非相干态光场，在几兆频率上存在高于散粒噪声基准几十ｄＢ的驰豫振荡噪声，在小于驰豫振荡频率范围，激光器的强度噪声基本上处于泵浦泵噪声水平。     

450W二极管泵浦Nd：YAG薄片激光器

二极管泵浦高平均功率固体激光器在工业、科研和军事等领域具有非常广泛的应用。光学泵浦将在固体激光介质里产生废热并引起介质温度升高。激光器的连续运转要求实时冷却以消除废热。由于固体激光介质的热导率通常较低，因此在激光介质内部和冷却表面之间将产生显著的温度梯度，这就导致了折射率梯度、机械应力和退偏等效应，进而降低光束质量，减小输出功率，甚至造成介质的断裂。这些效应是固体激光器向高平均功率定标的最大挑战。采用薄片激光介质是解决这一问题的有效手段之一。     

Experimental 511 W Composite Nd：YAG Ceramic Laser

We demonstrate a 511 W laser diode pumped composite Nd：YAG ceramic laser. The optical pumping system is consisted of five laser diode stacked arrays arranged in a pentagonal shape around the ceramic rod whose size is φ6.35×144mm. When the pumping power is 1600 W, the cw laser output up to 511 W at 1064nm can be obtained with a linear piano-piano cavity, and the optical-to-optical efficiency is 31.9%. To our knowledge, this is the highest value of laser output by using a newly invented composite Nd：YAG ceramic rod as the gain medium.     

Nd：YAG激光器切割金刚石膜的特性研究

采用Ｎｄ：ＹＡＧ激光器对金刚石膜进行切割，研究了激光器在不同输出功率下切割金刚石膜的速率和切割深度与时间的关系，以及Ｎｄ：ＹＡＧ激光器切割的金刚石膜在成份和形状上的变化特点，给出了比较理想的切割工艺条件。     

162W二极管泵浦Nd：YAG腔内倍频激光器

高平均功率腔内倍频绿光激光器在许多领域都有非常广泛的应用，如用于高反射率材料的激光处理设备，材料的切割、钻孔和打标，医疗设备，燃料激光器或钛宝石激光器的抽运源，以及大型激光演示的光源等，国内外开展了许多这方面的研究工作，目前国外已获得平均功率300W的调Q脉冲绿光输出，国内最高水平是华北光电技术研究所输出功率120W的二极管泵浦腔内倍频绿光激光器。     

LD泵浦Nd:YAG微片激光器

ＬＤ泵浦Ｎｄ：ＹＡＧ微片激光器结构简单紧凑，与半导体激光器相比，前者具有激光线宽窄、光束质量好、相干长度长等优点，因此在一些测量领域有着较好的应用前景。目前对ＬＤ泵浦Ｎｄ：ＹＡＧ微片激光器的实验工作主要是获得单频、单模连续输出和线性频率调制特性研究。本文综述了近几年来ＬＤ泵浦Ｎｄ：ＹＡＧ微片激光器的研究方向、成果及应用，主要介绍了各国对ＬＤ泵浦Ｎｄ：ＹＡＧ微片激光器的调频特性的研究状况     

高温LDAs侧面脉冲泵浦Nd:YAG激光器

设计了一台紧凑型高温激光二极管阵列侧面泵浦Nd:YAG脉冲激光器.通过半导体制冷器控制泵浦源工作温度在60℃,其发射中心波长为808 nm,谱线宽度为4 nm.模拟了泵浦源在40℃、50℃和60℃条件下60 s内的温度场分布.实验所用激光增益介质为Nd:YAG晶体,尺寸为φ5 mm×50 mm,掺Nd3+摩尔浓度为1....     

Nd：YAG激光器中的自锁模

本文报道在Nd:YAG激光器中首次获得的自锁模脉冲序列.自锁模是由于Nd:YAG棒中的自相位调制引起的.在主被动对撞锁模运转情况下,自锁模对脉冲波形有较大的影响.