Summary
Our presentation consisted of two parts. In the first part we presented main theoretical results on the plasma and pumping conditions required to generate gain at 3.4 nm in H-like CVI ions in transition from the first excited state to ground state. Transient population inversion is generated during the recombination process. It was shown that high gain (up to G~200 cm-1) can be achieved using currently available compact lasers. In the second part we presented a new type of compact laser generating ultra-short and ultra-intensive pulses via Raman Backscattering (RBS) amplification and compression in plasma. We achieved large (up to 1000) “seed” amplification and its compression from~1 psec down to 150 fsec in only 2 mm long plasma pumped with~1014 W/cm2 pulses. We also presented very recent experiments on amplification in 2 passes setup. Such RBS amplifier and compressor is expected to provide in not too far future intensities~1020 W/cm2 at high repetition rate in compact (university type) system, which would be ideal pump not only for 3.4 nm laser but even for shorter wavelength lasers.
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Suckewer, S., Avitzour, Y., Cheng, W., Ren, J., Li, S. (2007). Feasibility of 3.4 nm Laser Pumped by Ultraintense RBS Laser. 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_26
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