Two-dimensional near-field and far-field imaging of a Ne-like Ar capillary discharge table-top soft-x-ray laser
We have performed systematic measurements and numerical modeling of the divergence and exit beam size of a 46.9 nm Ne-like Ar capillary discharge pumped soft-x-ray amplifier. Two-dimensional near-field and far-field measurements were obtained over a wide range of discharge parameters. The spot size...
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| Lenguaje: | English |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_10502947_v58_n2_p1509_Moreno |
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todo:paper_10502947_v58_n2_p1509_Moreno2023-10-03T15:59:09Z Two-dimensional near-field and far-field imaging of a Ne-like Ar capillary discharge table-top soft-x-ray laser Moreno, C.H. Marconi, M.C. Shlyaptsev, V.N. Benware, B.R. Macchietto, C.D. Chilla, J.L.A. Rocca, J.J. Osterheld, A.L. We have performed systematic measurements and numerical modeling of the divergence and exit beam size of a 46.9 nm Ne-like Ar capillary discharge pumped soft-x-ray amplifier. Two-dimensional near-field and far-field measurements were obtained over a wide range of discharge parameters. The spot size and divergence of the laser beam were observed to increase significantly with decreasing discharge pressure. Simultaneously, the beam intensity distribution changed from a single peak pattern to an annular profile. These effects are shown to be the result of increased refraction of the soft-x-ray beam, caused by larger density gradients in the plasma columns of the lower pressure discharges. The spatial images are nearly cylindrically symmetric, and have less structure than those reported in the literature for laser-driven soft-x-ray lasers. Beam profiles synthesized by model calculations are found to be in good agreement with the recorded images. The obtained images in combination with the model computations clarify the origin of the different beam patterns that are observed in capillary discharge soft-x-ray laser experiments. Fil:Moreno, C.H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Marconi, M.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Chilla, J.L.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR English info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_10502947_v58_n2_p1509_Moreno |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| language |
English |
| orig_language_str_mv |
English |
| description |
We have performed systematic measurements and numerical modeling of the divergence and exit beam size of a 46.9 nm Ne-like Ar capillary discharge pumped soft-x-ray amplifier. Two-dimensional near-field and far-field measurements were obtained over a wide range of discharge parameters. The spot size and divergence of the laser beam were observed to increase significantly with decreasing discharge pressure. Simultaneously, the beam intensity distribution changed from a single peak pattern to an annular profile. These effects are shown to be the result of increased refraction of the soft-x-ray beam, caused by larger density gradients in the plasma columns of the lower pressure discharges. The spatial images are nearly cylindrically symmetric, and have less structure than those reported in the literature for laser-driven soft-x-ray lasers. Beam profiles synthesized by model calculations are found to be in good agreement with the recorded images. The obtained images in combination with the model computations clarify the origin of the different beam patterns that are observed in capillary discharge soft-x-ray laser experiments. |
| format |
JOUR |
| author |
Moreno, C.H. Marconi, M.C. Shlyaptsev, V.N. Benware, B.R. Macchietto, C.D. Chilla, J.L.A. Rocca, J.J. Osterheld, A.L. |
| spellingShingle |
Moreno, C.H. Marconi, M.C. Shlyaptsev, V.N. Benware, B.R. Macchietto, C.D. Chilla, J.L.A. Rocca, J.J. Osterheld, A.L. Two-dimensional near-field and far-field imaging of a Ne-like Ar capillary discharge table-top soft-x-ray laser |
| author_facet |
Moreno, C.H. Marconi, M.C. Shlyaptsev, V.N. Benware, B.R. Macchietto, C.D. Chilla, J.L.A. Rocca, J.J. Osterheld, A.L. |
| author_sort |
Moreno, C.H. |
| title |
Two-dimensional near-field and far-field imaging of a Ne-like Ar capillary discharge table-top soft-x-ray laser |
| title_short |
Two-dimensional near-field and far-field imaging of a Ne-like Ar capillary discharge table-top soft-x-ray laser |
| title_full |
Two-dimensional near-field and far-field imaging of a Ne-like Ar capillary discharge table-top soft-x-ray laser |
| title_fullStr |
Two-dimensional near-field and far-field imaging of a Ne-like Ar capillary discharge table-top soft-x-ray laser |
| title_full_unstemmed |
Two-dimensional near-field and far-field imaging of a Ne-like Ar capillary discharge table-top soft-x-ray laser |
| title_sort |
two-dimensional near-field and far-field imaging of a ne-like ar capillary discharge table-top soft-x-ray laser |
| url |
http://hdl.handle.net/20.500.12110/paper_10502947_v58_n2_p1509_Moreno |
| work_keys_str_mv |
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