Summary
Optical-field-ionization collisional-excitation soft x-ray lasers in clustered gas jets were experimentally investigated in detail. A tomographic measurement based on laser machining technique was used to resolve the growth of x-ray lasing intensity as a function of position in a cluster jet, exploring the origins of the dependences of x-ray lasing intensity on atom density and laser polarization. The presence of optimal atom density was found to be a result of ionizationinduced refraction. An unexpected observation is that circular polarization appears to be not the optimal polarization ellipticity, which may be a manifestation of effects of pre-ionization at the laser-cluster ionization front.
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Chou, MC., Lin, PH., Hung, TS., Lin, JY., Wang, J., Chen, SY. (2007). Experimental Investigation of the Parameter Space of Optical-Field-Ionization Collisional-Excitation X-Ray Lasers in a Cluster Jet. In: Nickles, P., Janulewicz, K. (eds) X-Ray Lasers 2006. Springer Proceedings in Physics, vol 115. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-6018-2_29
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DOI: https://doi.org/10.1007/978-1-4020-6018-2_29
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-6017-5
Online ISBN: 978-1-4020-6018-2
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