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本文分析了多针对平板放电,横向电激励CO2激光器的稳定性条件,论述了放电稳定性与镇流电阻的关系,以及稳流调节器的应用。 相似文献
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The performance of a CO laser having electrical excitation by a continuously operating, self-sustained glow discharge in a high-pressure gas mixture followed by a supersonic expansion to the cavity region has been studied. A threshold for lasing was found which corresponded to 0.035 eV of input energy per CO molecule. Beyond this, nearly 15 percent of the additional energy was extracted by the resonator. The total power reached 940 W with a maximum electrooptical efficiency of 13.7 percent and a specific power of 17 kJ/lb. The vibrational population distribution of the CO in the cavity, with and without lasing, was determined from the overtone emission spectrum. The data indicated a significant loss of vibrational energy during expansion. 相似文献
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本文报道一种使用半导体致冷装置的新型无水冷却CO2激光器。该激光器的放电管长200mm,内径5mm,能在无水玲却旧条作下连续运转,输出功率1.5W,效率为6.3%。 相似文献
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A. Bertolini G. Carelli N. Ioli C. A. Massa J. C. S. Moraes A. Moretti F. Strumia 《Journal of Infrared, Millimeter and Terahertz Waves》1997,18(4):779-783
Twenty-five new laser lines have been obtained in the wavelength region from 155 to 830 µm by optically pumping the CD2Cl2 (deuterated dichloromethane) molecule with a CW CO2 laser having a tunability range of 300 MHz. The wavelength, polarization relative to that of CO2 pumping radiation, and offset relative to the CO2 center frequency were determined for all of the new lines and some other already known laser emissions. For all of them we give also the relative intensity and the optimum pressure of operation. 相似文献
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大功率连续CO2激光器用于飞机激光去漆 总被引:5,自引:1,他引:4
激光飞机去漆相对于传统去漆方法有着明显的优势,利用大功率连续CO2激光器对飞机蒙皮表面漆层进行去除实验,经过对光束参数的控制,可以很好地去除铝合金蒙皮表面的漆层。 相似文献
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报导了连续波CO激光跃迁相关作用的实验结果,发现在低气压下P_(11-10)(21)和P_(12-11)(16)的跃迁分别和R_(17-16)(25)和R_(17—16)(23)重迭而发生共振吸收泵浦,以及由于P-R支重迭往往使得选支CO激光器中P支振荡被抑制。 相似文献
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采用B_2O_3液封直拉法制备出高电阻率的复合型半绝缘砷化镓。该材料的吸收系数低,红外透过率高,热稳定性能良好。经使用证明,完全能够满足连续大功率CO_2激光器窗口要求。 相似文献
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本文通过对高斯镜热透镜稳定腔(GRMSR)内光束特征的分析,提出了设计该类激光谐振腔的一般原则,并设计了平平腔型高斯镜稳定腔。实验结果与理论分析相符,并得到高输出功率、高光束质量的连续YAG激光输出。 相似文献
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研制成功一种工业用高气压横流针板放电式二千瓦级连续CO2激光器。本文论述这种激光器的温度效应,分析了影响放电气体温升因素,测量了在额定工作条件下,气体温度沿着气体流道的分布,作出了该型激光器在长达10小时的连续运转过程中,放电区内入口气温、出口气温、气体温升,输出功率和电光转换效率等参数随时间的变化曲线。实测表明,放电区内入口气温每升高1℃,激光输出功率平均下降约35瓦,电光转换效率平均下降约0.23%。 相似文献
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M. Redon C. Gastaud M. Fourrier 《Journal of Infrared, Millimeter and Terahertz Waves》1980,1(1):95-109
We report fifty seven CW FIR emissions observed in NH3, by resonant pumping with a CO2 laser. Exact coincidences between IR absorption lines of the gas and emission lines of the CO2 laser have been carried out by Stark tuning. IR frequency shifts, up to 30 GHz, have allowed the pumping of forty three NH3 transitions. These FIR emissions correspond to thirty one different wavelengths in the 50–400 μm range; eighteen ones of them are new emitted wavelengths by pumping with the CO2 laser. 相似文献