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本文对泵浦气体激光器的径向相对论电子束进行了研究。给出了产生径向电子束的同轴电子枪的设计和实验结果。初步讨论了这类束的一些特性。并用此电子束戍功地获得紫外波段激光输出。 相似文献
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编辑同志: 贵刊1978年第二期发表的“电子束泵浦异核型XeF准分子激光器的实验研究”一文(以下简称该文),是在我不知情的情况下由署名于该文的前面两位作者撰写发表的。我作为这项研究的主要参加者,自始至终负责了脉冲发生器的调试工作,对该文关于脉冲源等的论述,感到有一些值得商榷之处,其中主要有如下几点供读者以及该文撰写人参考。 1.关于该文第94页4—6行中……实验采用电流脉冲前沿小于Ins的毫微秒高压脉冲电流经Blu- 相似文献
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本文描述一电子束纵向泵浦准分子激光器。分析了螺旋管产生的磁场和它对电子束的影响。用 CVR 和探针线圈研究了磁场,用法拉弟探头和重氮化铬薄膜检测了电子束的位置和空间 FWHM 值。测量了整个电子束的能量。得到了可调谐 XeF(C→A)激光输出。 相似文献
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自1975年8月美国首次报导电子束泵浦惰性气体卤化物准分子激光器以后,引起了人们的重视。我们于今年年初研制了用高能电子束泵浦的XeF激光器之后,最近又用同样的激励手段成功地获得了KrF激光输出。 相似文献
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A 1-m gain length e-beam excited XeF(C-A) excimer laser operating in a unique reimaging ring amplifier configuration has been used to amplify an ultranarrowband single-mode dye laser pulse. Double heterodyne detection was used to simultaneously determine the single-mode injection dye laser and the amplified XeF(C-A) laser bandwidths. Fast Fourier transform (FFT) analysis of the pulses indicates that the amplifier output has the same bandwidth as the injected dye laser pulse. The bandwidth of the XeF(C-A) laser was line narrowed by 6 orders of magnitude, from a free running value of 16 nm (20000 GHz) to 20 MHz. Specific output energies of 0.7 J/l at 488 nm and 1.3 J/l at 476.5 nm were measured. Laser output pulse lengths up to 500 ns were observed 相似文献
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光抽运XeF(C-A)蓝绿激光器 总被引:9,自引:0,他引:9
利用分段表面放电作为光抽运源 ,采用光解离XeF2 技术 ,研制了一台 XeF(C A) 蓝绿激光器。抽运源有效激活长度为 6 0cm ,单位长度的沉积功率为 4 5MW /cm。在 2 5 0PaXeF2 / 6 0kPaAr/ 40kPaN2 条件下 ,采用平凹腔 ,输出耦合为 4% ,获得了XeF(C A)激光输出。对XeF(C A)激光特性参数进行了测量 ,输出能量为百毫焦耳量级 ,最大能量达 16 7mJ,激光脉宽~ 6 0 0ns ,辐射光谱范围 470~ 5 0 0nm ,发散角水平方向为 1 7mrad ,垂直方向为3 7mrad。 相似文献
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准分子激光器由于具有工作波长短、脉宽窄及峰值功率高等特点,已经在工业、军事和科研等领域得到了广泛的应用,并成为紫外波段研究领域的主要激光光源。随着许多新型产业发展的需要,易于集成、方便维护、长寿命、高重复频率及低成本的紧凑小型化准分子激光器拥有了广阔的应用前景。本文首先简单介绍了小型准分子激光特点及应用,然后详细讨论了自行研制的小型准分子激光器的物理结构和设计参数,并在此基础上完成了相关激光性能的实验研究,并对所得到的实验结果进行了分析和讨论,为国内小型准分子激光器件的商品化提供了可靠的研究基础。 相似文献
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Fundamental processes affecting the operation and performance of electron beam-excited XeF(C →A ) laser media have been analyzed and modeled. Emphasis has been placed on conditions typical of high current density (~250A cm-2), short pulse (~10 ns FWHM) e -beam excitation of high pressure (~6 atm) multicomponent mixtures comprised of Ar-Kr-Xe-NF3-F2 . Computation of the temporal evolution of excited and ionized species for such circumstances has permitted identification of the factors controlling XeF(C ) formation and loss, and has resulted in the identification of the primary transient species that absorb radiation in the blue-green spectral region. The data so obtained serve to explain measured XeF(C →A ) properties, particularly net gain, under conditions for which the C → A laser energy density and efficiency values are comparable to those of the UV XeF(B →X ) laser 相似文献
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A pulse output energy of 170 J has been achieved from an XeF(C→A) laser system, pumped by a pair of counterpropagating, three-meter-long electron beams. This represents a record for all types of pumping, for this excimer system. Energy was extracted from a volume of ~100 L, using a free-running stable oscillator. No evidence of laser oscillations on the competing XeF(B→X) transition was observed. Within the extraction volume the laser gas was pumped at a rate of 140 kW/cm3 (time average value), for a period of 1.7 μs. The optical cavity was folded, giving a gain length of 6 m. The optical pulse duration was 0.8 μs (full width at half maximum), and the observed flux buildup time of ~1 μs was consistent with modeling and a measurement of the net gain. The specific output energy was 1.7 J/L which is comparable to that achieved in previous, small scale experiments at somewhat higher pump rate. The results confirm the volumetric scalability of the electron beam pumped XeF(C→A) laser system to high output energy per pulse, and the feasibility of operating this system at a low electron beam pump rate which relaxes constraints on the design of the electron gun and pulse power subsystems in a high output energy device. Means for extending the laser pulse duration and increasing the output energy of the specific test device are discussed. An output energy of ~1000 J is projected for an optimized gas cell width, for full size resonator mirrors, and with injection 相似文献
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Detailed optical gain measurements of electron beam pumped Ar/Xe/NF3 and Ne/Xe/NF3 laser mixtures for theB rightarrow X and theC rightarrow A transitions of XeF at 351 and 488 nm are reported using a direct laser probe and two different fluorescence techniques. 相似文献
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