Gain Saturation Regime for Laser-Driven Tabletop, Transient Ni-Like Ion X-Ray Lasers

Journal Article · Mon May 22 00:00:00 EDT 2000 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.84.4834· OSTI ID:20216602

Dunn, J ^[1]; Li, Y ^[2]; Osterheld, A L ^[1]; Nilsen, J ^[1]; Hunter, J R ^[1]; Shlyaptsev, V N ^[3]

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1. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
2. Institute for Laser Science and Applications, Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
3. Department of Applied Science, University of California Davis-Livermore, Livermore, California 94550 (United States)

We have demonstrated small signal gain saturation on several transient-gain Ni-like ion x-ray lasers by using a high-power, chirped-pulse amplification, tabletop laser. These results have been achieved at wavelengths from 139-203 Angstrom using a total of 5-7 J energy in a traveling-wave excitation scheme. Strong amplification is also observed for Ni-like Sn at 119 Angstrom. Gain of 62 cm{sup -1} and gL product of 18 are determined on the 4d{yields}4p transition for Ni-like Pd at 147 Angstrom with an output energy of 12 {mu}J . A systematic evaluation of the laser driver parameters yields optimum beam divergence and small deflection angles of 2-5 mrads, in good agreement with simulations. (c) 2000 The American Physical Society.

• OSTI ID: 20216602
• Journal Information: Physical Review Letters, Vol. 84, Issue 21; Other Information: PBD: 22 May 2000; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
X-RAY LASERS
GAIN
SATURATION
LASER RADIATION
EXCITATION
EXPERIMENTAL DATA