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Variation of Xe concentration in a high pressure Ar/Xe laser with coaxial e-beam pumping

Chinese Journal of lasers 1993年第3期 9-16页

作者： Y. F. Lan , P. J. M. Peters, W. J. Witteman(University of Twente. Department of Applied PhysicsP.O. Box 217, NL-7500 AE Enxshede, The Netherlands)

A series of measurements on the high pressure (up to 18 bar) coaxial e-beam pumped Ar/Xe laser has been made at high power loading (up to 25 MW/cm~2) for various Xe mole fraction in Ar. We found that the optimum laser gas composition in our system was 0.4% Xe in Ar which was independent of the total gas pressure. At the optimum gas composition the output energy increased with increasing total gas pressure up to 16 bar, but the intrinsic efficiency reached a maximum at the total gas pressure of 8 bar. It was also found that at the optimum power deposition for both the 2.63μm and 2.65μm transitions the ratio of the integrated optical energy to that of the 1.73μm transition had a minimum in most cases at the optimum gas mixture for various gas pressures. This ratio increased with increasing gas pressure. The experimental results suggested that besides the 2-body Xe quenching at high Xe fraction and electron collision mixing at high power depositions the heavy particle quenching from Ar at high gas press

关键词： gas laser e-beam pumping

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DPAL research in Changsha

DPAL research in Changsha

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第十三届全国物理力学学术会议

作者： Hongyan Wang Xiaojun Xu Zining Yang Weihong Hua College of Opto-Electric Science and Engieering National University of Defense Technology

Alkali laser has been one of the most promising paths to high energy laser during past dozen *** the first group realized DPAL and XPAL lasing in China,we had done lots of theoretical and experimental works to further clarify the mechanism of alkali lasers,such as exploring scaling parameters design balance and MOPA configuration amplified spontaneous emission suppression in DPAL based on our self-developed fast converging algorithm,XPAL’s continuous wave operation threshold,performance degradation of VBG narrowed diode laser array and stacks due to conductive thermal flow,heat deposition induced gas dynamic parameters variation estimation,local atomic number density change measurement with single frequency tunable diode laser,ionization and other higher level nonlinear effects with opto-galvanometer *** on above research works,preliminary considerations and conclusions for alkali laser scaling were given.

关键词： gas laser diode laser alkali laser amplified spontaneous emission scaling

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