Imaging of high harmonic radiation emitted during the interaction of a 20 TW laser with a solid target
JOURNAL OF APPLIED PHYSICS 81:5 (1997) 2055-2058
X-ray spectroscopic studies of hot, dense iron plasma formed by subpicosecond high intensity KrF laser irradiation
Applied Physics Letters 69:24 (1996) 3686-3688
Abstract:
The time-integrated x-ray emission from a hot, dense iron plasma has been recorded. The iron plasma was created when a target with a 1000-Å-thick iron layer buried beneath 1000 Å of plastic was irradiated by a 300 fs pulse of 249 nm laser light at an intensity of approximately 1017 W cm-2. Two models have been used to construct a synthetic x-ray spectrum. The first employs detailed, spectroscopically accurate atomic data and the second uses a local thermodynamic equilibrium opacity model. The detailed model shows fairly good agreement with experiment whereas the opacity model only shows agreement in the gross features. © 1996 American Institute of Physics.Measurements of the hole boring velocity from Doppler shifted harmonic emission from solid targets
Physics of Plasmas AIP Publishing 3:9 (1996) 3242-3244
High-gain x-ray lasing at 11.1 nm in sodiumlike copper driven by a 20-J, 2-ps Nd:glass laser
Optics Letters 21:14 (1996) 1035-1037
Abstract:
Evidence of high gain pumped by recombination has been observed in the 5g-4f transition at 11.1 nm in sodiumlike copper ions with use of a 20-J 2-ps Nd:glass laser system. The time- and space-integrated gain coefficient was 8.8 ± 1.4 cm-1, indicating a single-transit amplification of ∼60 times. This experiment has shown that 2 ps is the optimum pulse duration to drive the sodiumlike copper recombination x-ray lasing at 11.1 nm. © 1996 Optical Society of America.Using low and high prepulses to enhance the J=0-1 transition at 19.6 nm in the Ne-like germanium XUV laser
Optics Communications 123:4-6 (1996) 777-789