高功率铜蒸气激光器的新进展──铜激光振荡器获得85W激光输出

高功率铜蒸气激光器的新进展──铜激光振荡器获得８５Ｗ激光输出国家八·五攻关激光分离同位素项目中的铜蒸气激光专题组在他们研制的放电管直径６．５ｃｍ，极间距２００ｃｍ的铜蒸气激光振荡器上得到平均功率８５Ｗ的黄光（５７８．２ｎｍ）和绿光（５１０．６ｎｍ）双...     

铜蒸气激光器的绝热结构对有效增益区的影响

讨论了放电口径在６ｃｍ以上的１００Ｗ铜蒸气激光器绝热结构对管壁温度分布的影响，从而对其有效增益区长度的影响。给出了两种不同绝热结构的理论模拟和实验结果     

磁约束铜蒸气放电中亚稳态铜原子密度的测量

利用自吸收方法测量了磁约束铜蒸气放电余辉初期的铜２Ｄ５／２亚稳态原子密度。对亚稳态原子的弛豫情况，同普通铜蒸气激光器进行了对比，分析了磁约束放电条件下亚稳态原子的弛豫机制。为建立重复频率运转的磁约束铜蒸气激光器提供了基础     

铜激光治疗结膜血管瘤36例疗效显著

铜激光治疗结膜血管瘤３６例疗效显著自１９９０年以来，我院采用中国科学院上海光机所生产的ＣＶＬ－１０型铜蒸气激光器治疗结膜血管瘤３６例，获得显著疗效。其中，睑结膜１３例，球结膜１４例，睑、球结膜９例。瘤体面积均在０．５～１．５ｃｍ２。采用的铜蒸气激光波...     

射频激励纵流CO激光器实验研究

射射频放电激励应用于流ＣＯ激光器，在工作气体流速 低于１３ｍ／ｓ，有效增益介质长度为８０ｃｍ，采用液氮冷却的条件下得到最大激光输出功率６７Ｗ，     

铜蒸气激光泵浦掺钛蓝宝石激光器输出超过5．5W

铜蒸气激光泵浦掺钛蓝宝石激光器输出超过５．５Ｗ牛津大学和牛津激光公司已发展一种高平均功率、高重复频率铜蒸气激光泵浦掺钛蓝宝石激光器。这种激光器在６．５ｋＨｚ重复率和５５ｎｓ脉宽时平均输出５．５ＷＴＥＭ００模激光功率。泵浦激光器是带放大器的改进型Ｃｕ１...     

贮能电容部分放电铜蒸气激光器的效率

贮能电容部分放电铜蒸气激光器的效率许多文献讨论了铜蒸气激光器的研究［１～３］，但是它的效率最高仅为３％［４］。最近几年提出几种提高效率的方法［５～８］，但到目前为止，实际上使用这些方法的问题仍未解决。文献［９］讨论了一种提高效率的方法：为了有效地泵浦...     

新型封离型脉冲CO_2激光器的研究

本文报导了连续封离型中小功率ＣＯ２激光器在脉冲状态下运转的技术问题。放电长度为２８ｃｍ，采用陶瓷电极，连续运转输出功率为９．４瓦，脉冲峰值功率为９４瓦，阴极无溅射。     

磁约束铜蒸气放电中基态铜原子密度的测量

利用吸收方法测量了磁约束铜蒸气放电中的基态铜原子密度,近室温的气体放电条件下得到铜原子密度达1014cm-3 量级.结果表明,磁约束放电能够产生激光激励过程所需密度的铜原子蒸气,这为磁约束放电铜蒸气激光器的可行性研究提供了一个重要结论.     

激光器

给出了铜蒸气激光器放电电路各参数的表达式及取值。与铜蒸气激光器动力学模型相结合,讨论了铜蒸气激光器动力学过程中由于放电管内等离子体参数的变化引起等离子体阻抗动态演变过程,并与采用固定等离子体参数的等离子体阻抗进行了比较。参5     

Sum frequency mixing of copper vapor laser output in KDP andβ-BBO

Generation at 271 nm by frequency summing the two copper vapor laser (CVL) output wavelengths (at 511 and 578 nm) in β-BBO and KDP is reported. A maximum sum frequency output of 100 mW was obtained for 6.8 W total pump power from a CVL operating with a fully unstable (M =16) confocal cavity     

A high-efficiency 200 W average power copper HyBrID laser

The high-power, high efficiency copper HyBrID laser has been scaled to large bore (6 cm), with an active length of 200 cm, to generate, as an oscillator, an average output power of 201 W at 1.9% efficiency (based on stored energy) in the green (510.6 nm) and yellow (578.2 nm). For an output power of 120 W, the efficiency reached 3.2%, when the pulse recurrence frequency was 17 kHz. The factors which make the interacting circuit superior to conventional capacitor transfer circuits for the excitation of copper lasers are discussed     

50瓦铜蒸气激光器放电管设计

激光放电管是铜蒸气激光器的关键部件,激光放电管的设计优劣直接影响着铜蒸气激光器的研制。本文主要描述了50瓦铜蒸气激光器激光放电管的设计过程,对放电管的绝热层进行了热计算,结合实际情况得到了结构参数。对放电管的真空密封、缓冲气体循环系统、水冷套等部件进行了设计,给出了各部件的具体结构形式。用该激光放电管进行实验研究,振荡级功率稳定在36瓦以上,用作放大级时平均提取功率达到了52瓦。     

输出功率50 W的脉冲染料激光放大器

推导了准稳态下横向抽运的脉冲染料激光放大器的简化速率方程,提出了双侧横向抽运方式的脉冲染料激光放大器的设计原则和设计方法.应用高功率脉冲染料激光放大器的物理设计结果,研制了输出功率为50 W的脉冲染料激光放大器的实验装置.采用铜蒸气激光(CVL)作为抽运光,在此染料激光放大器上进行了实验研究,获得染料激光输出功率为52 W,抽运激光功率提取效率为41%.给出了染料激光波长、注入染料激光功率以及抽运激光的时间和空间匹配特性与染料激光放大器输出激光功率和抽运激光功率提取效率的相互关系,讨论了染料溶液浓度对双侧横向抽运方式的脉冲染料激光放大器的输出光束质量的影响.     

用双闸流管运行的高功率铜蒸气激光器电源的研究

介绍了采用双闸流管作主放电开关的高功率铜蒸气激光器电源的原理、实验和结果。输入电源的功率达到10kW，输出激光平均功率最高达到100W，国产闸流管可以有效、正常地工作。     

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5106(?)和5782(?)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.     

CW radio-frequency excited white-light He-Cd+ laser

We report on the design and performance of a continuous-wave transverse capacitively coupled radio-frequency excited He-Cd⁺ laser, which is capable of simultaneously delivering stable, tens-milliwatt power output at the three primary spectral lines blue: (λ=441.6 nm), green (λ=533.7 nm and λ=537.8 nm), and red (λ=635.5 nm and λ=636.0 nm). Mixing these lines can result in the laser beam featured by a wide band of colors, including white color. The radio-frequency discharge, that excited the He-Cd mixture inside an alumina ceramic tube (400 mm length and 4 mm inner diameter) inserted into the fused silica tubing, operated between 400 mm long and 4 mm wide outer electrodes. Transformation of the radio-frequency discharge impedance to the 50-Ω output resistance of the radiofrequency generator and symmetrization of the radio-frequency voltage were performed by a special matching circuit. Under single-line operation the He-Cd⁺ laser output powers of 60 mW, 38 mW and 14 mW were obtained for the blue, green and red lines, respectively, at an input radio-frequency power of 400 W. Owing to the power interaction between the laser oscillations at red and green higher laser output powers in red and green are possible under multi-line operation. At optimum conditions the white-light laser output power of about 60 mW is obtainable from the laser tube of 40 cm active length. The rms noise-to-signal ratio (lower than 0.4%) of the laser output power of the radio-frequency excited He-Cd⁺ laser was comparable to that of hollow cathode He-Cd⁺ lasers and much lower than that of conventional positive column He-Cd⁺ lasers. The presented laser has exhibited stable operation for more than 400 hours, showing ability to become a long life laser     

封离式高重复率铜蒸气激光器

在脉冲金属蒸气激光器中,铜蒸气激光器是最有希望的。它有最佳的特性。第一,它运转在光谱区的黄-绿部分,在此波段缺乏很有效的激光器;第二,它有高的峰值功率(几百千瓦)和高的平均功率(几十瓦),总体效率达到1％以上。     

A 60-W high-beam-quality single-oscillator copper vapor laser

We report dramatic improvements (up to four times) in the generation of high-beam-quality (HBQ) output power from copper vapor lasers (CVLs) by using tailored HCl-H₂-Ne buffer gas mixtures. Up to 60 W of HBQ power was obtained from a 38-mm bore-diameter CVL at a pulse repetition frequency of 12 kHz and 50 W at 22 kHz. This improvement in power capability is attributable to the modification of the spatio-temporal gain characteristics of the laser when using the new buffer gas mixture     

A CW 28 μm water vapor laser for plasma diagnostics

A high-power CW 27.972 μm water vapor laser has been constructed in order to use as a light source of an interferometer for plasma diagnostics. The laser consists of 220 cm length and 2.0 cm small bore Pyrex glass discharge tube, semi-confocal resonator and Michelson coupler. From the measurement of cavity detuning curves, it is found that two waveguide modes, EH₁₁ and EH₂₁ oscillate. The increase of the output power is found to become more than seven times larger by adding He(50%)?H₂(50%) mixed gas. Under the optimum condition, the maximum output power of 65 mW or the output power per unit cavity volume of 83 μW/cm³ is obtained.