铜蒸气泵浦染料激光器输出功率与谐振腔结构的关系

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铜蒸气激光泵浦的单模脉冲染料激光器

设计了一台铜蒸气激光泵浦的单模脉冲染料激光器,介绍了它的结构,给出采用Rh6G、RhB和Kiton Red S时的实验结果。单模平均激光功率200mW,效率4.5％,线宽100MHz,覆盖范围563～642nm。     

铜蒸气激光泵浦的染料激光器中的ASE分析

对铜蒸气激光器横向泵浦的染料激光器中的ASE特性进行了研究。在理论上,考虑染料光强的时间、空间变化关系和光谱分布以及上能级粒子数的时间、空间变化,用计算机进行差分求解,得到ASE光强、光谱分布随泵浦光强的变化,得出了不同波长ASE光的脉冲宽度的不同结果,对增益的空间分布也进行了计算。在实验上,用平均功率5W的铜蒸气激光器泵浦R6G的酒精溶液,染料在染料盒中快速流过泵浦区。测出ASE强度随泵浦光的变化关     

铜激光泵浦的高效率染料激光器

本文对铜激光泵浦的染料激光系统进行了实验研究。测量了泵浦光强、染料浓度、输出镜反射率等因素对染料激光强度的影响,找出了最佳工作状态。用若丹明B乙二醇溶液获得了29.8％的转换效率及300A的调谐范围,同时对激光器的若干参量进行了测量。     

铜激光泵浦的高效染料激光器

本文对铜激光泵浦的染料激光系统进行了研究·测量了泵浦光强、染料浓度、输出镜反射率等因素对输出染料激光强度的影响。找出了最佳工作状态,用若丹明B乙二醇溶液获得了29.8%的转换效率与300A的调谐范围,同时还进行了一些参数测量。     

染料蒸气激光器

染料激光器由于波长可调这一优异性质，被用于分光等很多的领域之中。这种染料激光器向来是利用溶剂在液体状态下使用的，近几年来把染料直接变成蒸气，使之在气体状态下振荡的研究取得了进展。和液体状态相比，使用染料蒸气时，一般认为有如下几个优点：1)热折射率变化引起的激光的扰动小。2)通过混合其他气体容易了解诸如碰撞等效应，也容易分析反应过程。3)在液体状态下由于溶剂一般要吸收紫外区域的光，所以难以得到紫外波段的振荡;与此相反，在蒸气状态下不存在这一问题，可望得到紫外波段的振荡。4)有可能直接利用放电或电子束进行激励，可望得到高效率的激光。其中的笫3)、4)优点，作为染料蒸气所特有的性质，使人尤感兴趣。     

铜蒸气激光泵浦的飞秒光脉冲染料放大器

建立了频率为８ｋＨｚ的铜蒸气激光泵浦的二级共焦飞秒光脉冲染料放大器，把从对撞脉冲锁模环形染料激光器中输出的光脉冲能量放大到０．６μＪ，放大倍数为３×１０３，放大光脉冲宽度为６０飞秒，因此得到放大光脉冲峰值功率为１０ＭＷ。     

铜蒸气激光器

以纯铜或铜的卤化物蒸气作激光工作物质,利用高重复频率谐振布鲁林放电线路激励,得到510.6 nm和578.2 nm激光输出.当充电电容量为1.5毫微法,充电电压6000伏,脉冲重复频率16千赫时,激光平均输出功率为1.2瓦.     

火花泵浦染料激光器

把一个短的小直径火花源和染料盒并排装在球面腔内,电输入小到5毫焦耳就可获得重复率高达2000次/秒的激射。美国联合飞机公司研究实验室的费拉尔（C. M. Ferrar)报导,在乙醇溶液里使用若丹明6G可能达到低阈值。乙醇的热光特性较差,要用水溶液来获得高重复率;在重复率为2000次/秒时,输入阈值功率增加到0.1焦耳。以使装在激光共振器上的一个未涂膜的简单玻璃标准具倾斜的方法来进行激光调谐。     

铷蒸气激光器泵浦的双波长激光器

双波长激光器在差分吸收激光雷达(different absorption laser radar,DIAL)等诸多领域具有较为广泛的应用.文章使用半导体泵浦的铷激光器泵浦掺钕氟化锂钇(Nd∶YLF)和掺钕钒酸钇(Nd∶YVO4)晶体,实现了(1 047 nm&1 064 nm)的双波长激光输出,验证了该种技术路线实现双波长输出的可行性.当半导体激光器的功率为16.05 W时,双波长的总激光功率为102.8 mW,斜率效率为1.27％,两波长功率比为404∶1,为双波长激光的产生提供了新的技术路线.     

High power efficient dye amplifier pumped by copper vapor lasers

An extensive study has been performed on a dye amplifier pumped by copper vapor lasers. The amplifier utilizes a transverse pumping configuration in which the dye flow, pump beam, and dye extraction beam are mutually orthogonal. The operating characteristics of the amplifier have been studied using four dye-solvent systems which span the wavelength range continuously from 560 to 690 nm. Optimum conversion efficiencies of 18-30 percent at output powers of 0.41-0.76 W have been measured from the four dyes at a 6 kHz pulse repetition rate. The efficiencies and output powers were limited only by the available copper laser pump power. Analytic expressions have been obtained for the amplifier power gain and efficiency using a rate equation treatment of the system dynamics. Excellent agreement is obtained between the predicted and measured amplifier gain characteristics for rhodamine 6G.     

Time resolved beam divergence from a copper vapor laser withunstable resonator

The temporal evolution of the far-field intensity distribution (and hence beam divergence) for the output of a CVL operating with both on-axis and off-axis unstable resonators is investigated in detail. The CVL output pulse consists of several temporally resolved components, where each successive component has lower divergence approaching the diffraction limit. A comprehensive model for the divergence of each temporal component from a CVL operating with a variety of unstable resonators is presented. In this model the resonator controls the output divergence by imposing geometric constraints on the propagation of spontaneous emission on repeated round-trips through the unstable resonator equivalent lensguide. Effects of resonator asymmetry and radial gain variations on the far-field intensity distribution (and hence divergence) are evaluated. Experimental measurements of the temporal evolution of output divergence from a CVL operating with both on-axis and off-axis unstable resonators and for a variety of excitation conditions are also presented. For CVL operation at high pulse repetition frequency the ASE at the start of the laser pulse has an annular profile. This annular gain distribution is found to modify the output far-field intensity distribution of the earlier temporal components of the laser pulse. For on-axis unstable resonators these components are found to have annular far-field intensity distributions, whereas for off-axis unstable resonators they have greatly reduced but anisotropic divergence     

Near-infrared dye laser pumped by a carbazine-122 dye laser

Efficient generation of a high-power near-infrared dye laser has been achieved by pumping longitudinally with a 5321-Å pumped carbazine-122 dye laser at 7000 Å. A peak power as high as 3.5 MW at 8630 Å and peak powers in excess of 0.5 MW from 7680 to 9170 Å have been obtained.     

XeCl激光泵浦的ns染料激光器

报道了以XeCl准分子激光作泵浦源,通过所谓的“控制腔瞬态过程”的方法,直接获得ns染料激光脉冲的实验结果。与N_2光泵浦比较,XeCl激光泵浦可得到更短波长和更高阈值系统的激光振荡。     

Electronically tuned synchronously pumped dye laser

We have demonstrated electronically tunable pulses as short as 1.3 ps with a tuning rate of 150 Å/kV using a synchronously pumped rhodamine dye laser. Electronically tunable transform limited pulses of 5 ps duration have also been produced.     

High-peak-power 532-nm pumped dye laser

A dye laser, pumped by the second harmonic of a flash-pumpedQ-switched Nd:YAG oscillator/amplifier chain is described. The dye laser produces 8-ns-long pulses with energies as great as 140 mJ and peak powers of 20 MW. At a repetition rate of 10 pulses/s, the average power obtained is 1.4 W and the conversion efficiency (532 nm to dye) is approximately 50 percent.     

Low-threshold dye laser pumped by visible laser diodes

The author describes a continuous-wave (CW) dye laser has been pumped by laser diodes for the first time. Two 10-mW visible laser diodes were polarization-combined to pump a rhodamine 700 dye jet laser. The absorbed pump threshold power was 5.6 mW, and 0.28 mW of output power was produced at 758 nm. The resonator was scalable and generated over 360 mW with a slope efficiency of 57% when pumped with a DCM dye laser at 660 nm     

XeCl激光泵浦超短腔染料激光器

用脉宽15～20ns的XeCl准分子激光脉冲泵浦可调腔长的R6G超短腔激光器,得到的输出脉宽压缩了15～20倍;输出脉宽随泵浦光斑大小及能量的变化,得到与以前不同的结果。     

Injection-locked dye laser pumped by a xenon-ion laser

Injection locking of a dye laser is reported for a 4-mirror ring-cavity dye laser pumped by a xenon-ion laser. Both a He-Ne laser and tunable CW dye laser were used as the injection sources.     

Nd:YAG laser pumped infrared dye laser

Efficient operation of a high peak power and high-average power infrared dye laser, continuously tunable over the range of 10810-12160 Å, has been achieved by pumping with an Nd:YAG laser. A peak power as high as 4 MW with an average power of 390 MW was obtained.