晶体温度对L泵浦Nd：YVO_4／KTP腔内倍频激光器输出的影响

研究了ＬＤ泵浦Ｎｄ：ＹＶＯ４／ＫＴＰ腔内倍频激光器中激光晶体与倍频晶体的温度对器件基频与倍频输出的影响。用国产１Ｗ激光二极管作泵浦源,通过选择合适的Ｗｄ：ＹＶＯ４和ＫＴＰ的工作温度,在泵浦功率为６０４．２ｍＷ时获Ｔ得１３３．６ｍＷ的绿光输出,光－光转换效率为２２．１％。     

大功率全固化绿光激光器

大功率全固化绿光激光器最近，我们利用中国科学院物理所生长的Ｎｄ：ＹＶＯ４，ＫＴＰ晶体和福建物构所生长的ＣｈＯ晶体，采用角度相位匹配的ＫＴＰ腔内倍频和温度相位匹配的ＬＢＯ腔内倍频，成功地研制了一台ＬＤ泵浦的全团化大功率绿光激光器。对ＫＴＰ，ＬＢＯ这两种...     

LD纵向泵浦腔内倍频激光器腔参数的选择

从理论上研究了在一定长ＫＴＰ情况下ＬＤ纵向泵浦Ｎｄ：ＹＶＯ４／ＫＴＰ腔内倍频激光器的绿光输出与腔长、输出镜曲率半径及泵浦光斑半径等参数的关系。根据分析选择了一组实验参数，在入射泵浦功率为６６８．７ｍｗ时获得了１５３．９ｍｗ的绿光输出，光一光转换效率为２３％。将实验结果与理论计算值进行了比较，两者符合较好。     

全固化Nd：YVO4绿光激光器

本文介绍了一种新型微型全固化绿光激光器。采用激光二极管端面泵浦Ｎｄ：ＹＶＯ４激光晶体，用ＫＴＰ作为非线性倍频晶体，当泵浦光功率为３６０ｍＷ时，获得５３０ｎｍ波长、９．３ｍＷ的基横模绿光输出，总的光－光转换效率为２．４％。     

LD泵浦的声光调Q腔内倍频固体激光器

应用国产的８０８ｎｍ激光二极管（ＬＤ）研制了声光调Ｑ的Ｎｄ：ＹＶＯ４－ＫＴＰ腔内倍频的准连续、单脉冲激光器,得到了ＴＥＭ００模、频率为２０ｋＨｚ的准连续稳定的５３２ｎｍ原绿光输出,阈值泵浦功率为３００ｍＷ。在连续２Ｗ的泵浦功率下,准连续绿光输出为１２０ｍＷ,脉冲宽度为４０ｎｓ,单脉冲能量为５０μＪ,通过对声光Ｑ开关的驱动电源改造,得到了单脉冲激光输出。在分析计算的基础上,建立了２Ｗ、８０８ｎｍＬＤ     

高转换效率连续内腔倍频绿光激光器

高转换效率连续内腔倍频绿光激光器我们采用国产输出功率１Ｗ的半导体激光器泵浦的Ｎｄ：ＹＶＯ４内腔倍频激光器，获得能量转换效率为１２％。Ｎｄ：ＹＶＯ４晶体尺寸为３ｍｍ×３ｍｍ×１ｍｍ，Ｎｄ掺杂浓度２％，倍频晶体ＫＴＰ置入腔内。激光二极管输出经准直－聚光光...     

激光二极管泵浦高效Nd：YVO_4激光器特性研究

报道了激光二极管泵浦高效Ｎｄ：ＹＶＯ４激光器输出功率及波长特性的研究。基频光输出２３０ｍＷ，光－光转换效率为４５％。对激光输出波长和泵浦功率的关系进行了研究，发现激光器的输出波长随泵浦功率的平均变化率约为１．０５×１０－３ｎｍ／ｍＷ。利用ＫＴＰ腔内倍频获得２９．８ｍＷ的绿光输出，光－光转换效率为１２．４％。     

优质KTP晶体腔内有效倍频效率及损耗的研究

本文报道一种高效内倍频Ｎｄ：ＹＶＯ４／ＫＴＰ激光器的输出特性以及优质ＫＴＰ晶体腔内有效倍频效率和损耗的研究结果。在泵浦功率为１９Ｗ时获得了５．８５Ｗ的连续绿光输出,相应的光－光转换效率为３０．８％。研究表明,优质ＫＴＰ晶体腔内有效倍频效率超过７０％,最高达到７４．１％;而其损耗仅为０．００７ｃｍ＾－１。     

LD泵浦Nd：YVO4倍频激光器运转特性

本文报导了ＬＤ泵浦Ｎｄ：ＹＶＯ４小型倍频激光器的运转，研究了其输出功率、模式、光束发射角和偏振态。     

小型二极管泵清洁浦固激光器

简述了小型,微型二极管泵浦的Ｎｄ：ＹＶＯ４、Ｎｄ：ＹＡＧ、Ｙｂ：ＹＡＧ、Ｇｒ：ＬｉＳＡＦ激光器、Ｔｍ、Ｈｏ、Ｅｒ激光器的技术现状。     

LD抽运的高性能微型绿光激光器

研制成高性能微型全固态绿光激光器。用独特的整体控温技术提高器件效率 ,全部元件固化为一个整体以提高激光输出功率和光束指向稳定性 ,用 1W的LD纵向抽运Nd∶YVO4 /KTP激光器 ,获得 195mW的TEM0 0 模 0 53μm连续激光输出。输出功率不稳定度≤± 2 % ,光束方向稳定性优于 0 0 1mrad/hr和 0 0 3mrad/ 2 4hrs。该器件体积小 ,效率高 ,使用方便。     

氙灯泵浦的NYAB绿光激光实验研究

本文报道自倍频激光晶体NYAB的脉冲激光特性。以φ3mm×25mm的小型氙闪光灯泵浦φ3×11mm~3等不同尺寸的激光棒时获得了能量为数毫焦耳、波长为0.53μm的绿色激光输出。开展了1～20pps的重复率脉冲激光实验,实践表明,NYAB是一种很有前途的小型绿色激光器的工作物质。     

Study on the Spectrum of Miniature Optically Pumped NH3 Submillimeter-Wave Laser

By means of an iteration method and taking into account the broadening of the infrared pumping laser, the spectrum of a miniature, optically pumped, superradiant NH₃ submillimeter-wave(SMMW) gas laser pumped by CO₂-10R(8) has been calculated and studied by solving density matrix equations. Experimentally, the interferogram of miniature SMMW laser pumped by a TEA-CO₂ laser with 10R(8) line is measured. This is the first time that the theoretical spectrum has been in good agreement with experimental results.     

A New Model of Calculating Miniature Optically Pumped Far-Infrared Laser

Considering the broadening of infrared pumping laser, the spectrum of miniature optically pumped superradiant NH₃ far-infrared laser pumped by CO₂-10R(8) has been calculated by solving density matrix equations and using iteration method. It is first time that the theoretical spectrum has been in good agreement with experimental results.     

Spectral Characteristics of Raman Emissions from Miniature Pulsed Optically Pumped Far Infrared Laser

A miniature FIR laser with a sample-tube in 10 or 20cm length were constructed, and the laser's cavity consisted of a pair of metallic meshes, with NH3 molecules as active medium pumped by a TEA-CO2 laser, a series of FIR laser lines were observed. By taking account of the properties of the Fabry-Perot cavity and the gain characteristics of Raman transitions in the miniature optically pumped FIR laser, the spectral characteristics of the FIR laser were studied.     

全固体化Nd：YVO_4单频绿光激光器

采用“面对面”激光二极管泵浦Ｎｄ：ＹＶＯ４和ＫＴＰ内腔倍频，获得单横模单纵横绿光输出。阈值泵浦功率为１２ｍｗ，实测的单端绿光最大单横模输出为７．３ｍｗ，最大单纵模输出为１．５ｍｗ，光光转换效率为１．９％。全固化系统设计小型紧凑，运转可靠。     

Operating Parameters Optimization of Buffer Gas in Optically Pumped Submillimeter Wave Laser

Based on the basic theory of molecular vibration relaxation and semi-classical density matrix theory, operating parameters optimization of buffer gas in the process of miniature pulsed optically pumped submillimeter wave laser was systemically studied and the theoretical calculated result was tested by experiments. The result would do favor to develop and study high-power and wide-range tunable miniature and high-efficient pulsed optically pumped submillimeter wave laser and also had some instruction to its application.     

Effects of Buffer Gas N2 on Miniature Optically Pumped NH3 Submillimeter Wave Cavity Laser Emission at 67.2 μm

The effect of buffer gas N₂ on miniature optically pumped NH₃ submillimeter wave (SMMW) cavity laser emission at 67.2μm was studied theoretically and experimentally. It has been found that: 1. N₂ had a positive effect on laser output of 67.2μm, 2. sharp absorption in laser spectrum under certain gases mixture pressure corresponded to the threshold of 'bottleneck effect”.     

High efficiency integral III-N/II-VI blue-green laser converter

An integral optically-pumped laser converter comprising an ultra-low-threshold green (~540 nm) CdSe quantum dot laser chip pumped by a blue InGaN/GaN quantum well heterostructure laser grown on Si (111) substrates has been fabricated and studied. The maximum achieved quantum efficiency and pulse output power in green are as high as 14% and 3 W, respectively     

Theoretical Study on the Gain and Tuning Characteristics of Miniature Optically Pumped NH3 Submillimeter Laser

The gain and the tuning characteristics of miniature optically pumped super-radiant NH₃ submillimeter-wave gas laser have been studied theoretically based on the quantum density matrix equations. The density matrix equations of three-level quantum system have been solved, and the gain and the output density versus different frequency detuning of submillimeter laser and infrared pumping laser have been calculated respectively by means of iteration method. The characteristic curves corresponding to ideal monochromatic IR pumping model and broadened IR pumping model have been obtained. Meanwhile, the tuning and the nonlinear properties of the system have been revealed.