Using the X-FEL to photo-pump X-ray laser transitions in He-like Ne

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Nearly four decades ago H-like and He-like resonantly photo-pumped laser schemes were proposed for producing X-ray lasers. However, demonstrating these schemes in the laboratory has proved to be elusive because of the difficulty of finding a strong resonant pump line. With the advent of the X-ray free electron laser (X-FEL) at the SLAC Linac Coherent Light Source (LCLS) we now have a tunable X-ray laser source that can be used to replace the pump line in previously proposed laser schemes and allow researchers to study the physics and feasibility of resonantly photo-pumped laser schemes. In this paper we use the ... continued below

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Nilsen, J & Rohringer, N August 30, 2011.

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Nearly four decades ago H-like and He-like resonantly photo-pumped laser schemes were proposed for producing X-ray lasers. However, demonstrating these schemes in the laboratory has proved to be elusive because of the difficulty of finding a strong resonant pump line. With the advent of the X-ray free electron laser (X-FEL) at the SLAC Linac Coherent Light Source (LCLS) we now have a tunable X-ray laser source that can be used to replace the pump line in previously proposed laser schemes and allow researchers to study the physics and feasibility of resonantly photo-pumped laser schemes. In this paper we use the X-FEL at 1174 eV to photo-pump the singly excited 1s2p state of He-like Ne to the doubly excited 2p3p state and model gain on the 2p3p-2p2s transition at 175 eV and the 2p3p-1s3p transition at 1017 eV. One motivation for studying this scheme is to explore possible quenching of the gain due to strong non-linear coupling effects from the intense X-FEL beam We compare this scheme with photo-pumping the He-like Ne ground state to the 1s3p singly excited state followed by lasing on the 3p-2s and 3d-2p transitions at 158 and 151 eV. Experiments are being planned at LCLS to study these laser processes and coherent quantum effects.

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PDF-file: 10 pages; size: 0.7 Mbytes

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  • Presented at: SPIE 2011 Optics and Photonics, San Diego, CA, United States, Aug 21 - Aug 25, 2011

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  • Report No.: LLNL-PROC-496573
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 1026921
  • Archival Resource Key: ark:/67531/metadc840215

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  • August 30, 2011

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  • May 19, 2016, 3:16 p.m.

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  • Dec. 9, 2016, 10:30 p.m.

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Nilsen, J & Rohringer, N. Using the X-FEL to photo-pump X-ray laser transitions in He-like Ne, article, August 30, 2011; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc840215/: accessed November 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.