Saturated lasing in neon- and nickel-like ions at pump energies below 30 J

Juerg E. Balmer; Riccardo Tommasini; Frank Loewenthal

doi:10.1117/12.366655

21 October 1999 Saturated lasing in neon- and nickel-like ions at pump energies below 30 J

Juerg E. Balmer, Riccardo Tommasini, Frank Loewenthal

Proceedings Volume 3776, Soft X-Ray Lasers and Applications III; (1999) https://doi.org/10.1117/12.366655
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

We report on the experimental demonstration of saturated x- ray laser output from collisionally pumped Ne-like Fe at 25.5 nm as well as Ni-like Ag and Pd at 14.0 nm and 14.7 nm, respectively, using a 100-ps drive pulse irradiation. A double-prepulse scheme and a 3-m radius-of-curvature target resulted in a gain-length product of gL equals 16.5 in the case of Fe. With a single prepulse and flat slab targets, gain- length products of 15.3 and 15.8 were obtained for Ag and Pd, respectively. Saturation was also confirmed by the observed reduction in beam divergence with increasing target length. The required drive energy used was only 30 J in a 100-ps pulse, corresponding to an irradiance of 12 TW/cm². A key role in the achievement of these results was played by the reduction in the roughness of the target surface in the case of the Pd x-ray laser.

Citation Download Citation

Juerg E. Balmer, Riccardo Tommasini, and Frank Loewenthal "Saturated lasing in neon- and nickel-like ions at pump energies below 30 J", Proc. SPIE 3776, Soft X-Ray Lasers and Applications III, (21 October 1999); https://doi.org/10.1117/12.366655

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