共查询到14条相似文献,搜索用时 125 毫秒
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研究了稀释气进气位置、稀释比以及氮气、二氧化碳、氩气作为稀释气对kW级立式N2-COIL输出功率的影响。结果表明:主稀释气从发生器进入,有利于输出功率的提高;从发生器出口进入,有利于激光器的稳定。采用不同的稀释气时,输出功率有很大的不同,但是随着稀释比的变化趋势几乎相同。以Ar作为稀释气可以降低超音速段的温度,提高小信号增益系数;据此优化设计激光器,可以提高激光器的输出功率和化学效率。以CO2气体为稀释气的激光器在低温吸附方面却有着极大的吸引力。对于不同的实验目的和要求,应该选择不同的气体作为稀释气,充分利用气体自身的优势。 相似文献
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连续波氧碘化学激光器的实验研究 总被引:2,自引:1,他引:1
通过实验,得到连续波氧碘化学激光器在氯气流量为50mmol/s时,输出功率达1kW。并测量了光束发散角,考查了光束发散角与功率及腔镜曲率半径的关系。 相似文献
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通过采用Cl2流量250mmol/s列管射流式氧发生器的COIL出光实验,得到了激光输出功率随碘副气流相对于氧主气流混合穿透深度的变化规律。实验结果表明,穿透深度对激光功率影响较大,存在最佳穿透深度,约为3.16mm,计算的最佳穿透深度与实验得到的最佳穿透深度基本一致。通过逐步改变供碘系统的碘气流流量,测量激光的输出功率,在实验上证实并找到了COIL的最佳碘流量值,约为4.5mmol/s,这一结果比以往文献所登载的最佳碘流量值要确切。 相似文献
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Spira-Hakkarainen S. Kreischer K.E. Temkin R.J. 《IEEE transactions on plasma science. IEEE Nuclear and Plasma Sciences Society》1990,18(3):334-342
A theoretical and experimental investigation of the operation of a harmonic gyrotron at submillimeter wavelengths is reported. Using a waveguide cavity with an iris at the output end of the straight section, 14 different second-harmonic modes were observed with frequencies of 301-503 GHz, output powers of 1-22 kW, and a 12-MHz emission frequency bandwidth. The highest output power was 22 kW, with a total efficiency of 3.5% at 467 GHz, and an output power of 15 kW with a 6% efficiency was obtained at 417 GHz. Research was conducted using a 65-75 kV up to 10-A electron gun with a 1/1.5-μs pulse length and a 4-Hz repetition rate, which produced a helical electron beam in magnetic fields of up to 14 T. These results represent the first operation of a high-power harmonic gyrotron in the submillimeter region 相似文献
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Guilong Yang Dianjun Li Jijiang Xie Laiming Zhang Fei Chen Jin Guo Lihong Guo 《Laser Physics》2012,22(7):1173-1176
A high power repetitive spark-pin UV-preionized TEA CO2 laser system is presented. The discharge for generating laser pulses is controlled by a rotary spark switch and a high voltage pulsed trigger. Uniform glow discharge between two symmetrical Chang-electrodes is realized by using an auto-inversion circuit. A couple of high power axial-flow fans with the maximum wind speed of 80 m/s are used for gas exchange between the electrodes. At a repetitive operation, the maximum average output laser power of 10.4 kW 10.6 ??m laser is obtained at 300 Hz, with an electro-optical conversion efficiency of 15.6%. At single pulsed operation, more pumping energy and higher gases pressures can be injected, and the maximum output laser energy of 53 J is achieved. 相似文献
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We present the design and investigation of a novel chemosorption vacuum pump (CSVP) for discharging the exhaust gases of a chemical oxygen-iodine laser system diluted with carbon dioxide (CO2-COIL). The CSVP comprises two fixed-bed reactors separately filled with CO2/H2O and O2/I2/Cl2 adsorbents, which can efficiently chemically absorb the CO2-COIL exhaust gases at room or higher temperature. We consider the effects of the adsorbents in different specifications and fixed beds of various constructions on the adsorption performance of the CSVP. We develop and study the sealed CO2-COIL system with the CSVP. We achieve a stable operation with a cumulative duration time of 40 s for four runs and an average output power up to 2.0 kW at a Cl2 flow rate of ~158 mmol/s and a CO2 flow rate of 132 mmol/s. The experimental results indicate that the COIL system with the CSVP performs similarly to a conventional COIL with a vacuum tank. Taking into account that the CSVP is free of vibration and noise, avoids air pollution, is easily operated, and has a short preparation time, we believe that the chemosorption vacuum pump is an excellent alternative pump system for a transportable COIL system. 相似文献