Efficient picosecond x-ray pulse generation from plasmas in the radiation dominated regime
The efficient conversion of optical laser light into bright ultrafast x-ray pulses in laser created plasmas is of high interest for dense plasma physics studies, material science, and other fields. However, the rapid hydrodynamic expansion that cools hot plasmas has limited the x-ray conversion effi...
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2017
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_23342536_v4_n11_p1344_Hollinger http://hdl.handle.net/20.500.12110/paper_23342536_v4_n11_p1344_Hollinger |
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paper:paper_23342536_v4_n11_p1344_Hollinger2023-06-08T16:35:40Z Efficient picosecond x-ray pulse generation from plasmas in the radiation dominated regime Extreme ultraviolet (EUV) Nanomaterials Plasmas Soft x-rays Ultrafast lasers X-ray imaging X-rays Aspect ratio Energy dissipation Extreme ultraviolet lithography Fluid dynamics Hydrodynamics Laser pulses Nanostructured materials Plasma (human) Ultrafast lasers Ultrashort pulses X rays Extreme ultraviolets Hydrodynamic expansion Laser-created plasma Relativistic intensity Soft X-ray Solid density plasmas X-ray conversion efficiency Xray imaging Plasma diagnostics The efficient conversion of optical laser light into bright ultrafast x-ray pulses in laser created plasmas is of high interest for dense plasma physics studies, material science, and other fields. However, the rapid hydrodynamic expansion that cools hot plasmas has limited the x-ray conversion efficiency (CE) to 1% or less. Here we demonstrate more than one order of magnitude increase in picosecond x-ray CE by tailoring near solid density plasmas to achieve a large radiative to hydrodynamic energy loss rate ratio, leading into a radiation loss dominated plasma regime. A record 20% CE into hν > 1 keV photons was measured in arrays of large aspect ratio Au nanowires heated to keV temperatures with ultrahigh contrast femtosecond laser pulses of relativistic intensity. The potential of these bright ultrafast x-ray point sources for table-top imaging is illustrated with single shot flash radiographs obtained using low laser pulse energy. These results will enable the deployment of brighter laser driven x-ray sources at both compact and large laser facilities. © 2017 Optical Society of America. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_23342536_v4_n11_p1344_Hollinger http://hdl.handle.net/20.500.12110/paper_23342536_v4_n11_p1344_Hollinger |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Extreme ultraviolet (EUV) Nanomaterials Plasmas Soft x-rays Ultrafast lasers X-ray imaging X-rays Aspect ratio Energy dissipation Extreme ultraviolet lithography Fluid dynamics Hydrodynamics Laser pulses Nanostructured materials Plasma (human) Ultrafast lasers Ultrashort pulses X rays Extreme ultraviolets Hydrodynamic expansion Laser-created plasma Relativistic intensity Soft X-ray Solid density plasmas X-ray conversion efficiency Xray imaging Plasma diagnostics |
| spellingShingle |
Extreme ultraviolet (EUV) Nanomaterials Plasmas Soft x-rays Ultrafast lasers X-ray imaging X-rays Aspect ratio Energy dissipation Extreme ultraviolet lithography Fluid dynamics Hydrodynamics Laser pulses Nanostructured materials Plasma (human) Ultrafast lasers Ultrashort pulses X rays Extreme ultraviolets Hydrodynamic expansion Laser-created plasma Relativistic intensity Soft X-ray Solid density plasmas X-ray conversion efficiency Xray imaging Plasma diagnostics Efficient picosecond x-ray pulse generation from plasmas in the radiation dominated regime |
| topic_facet |
Extreme ultraviolet (EUV) Nanomaterials Plasmas Soft x-rays Ultrafast lasers X-ray imaging X-rays Aspect ratio Energy dissipation Extreme ultraviolet lithography Fluid dynamics Hydrodynamics Laser pulses Nanostructured materials Plasma (human) Ultrafast lasers Ultrashort pulses X rays Extreme ultraviolets Hydrodynamic expansion Laser-created plasma Relativistic intensity Soft X-ray Solid density plasmas X-ray conversion efficiency Xray imaging Plasma diagnostics |
| description |
The efficient conversion of optical laser light into bright ultrafast x-ray pulses in laser created plasmas is of high interest for dense plasma physics studies, material science, and other fields. However, the rapid hydrodynamic expansion that cools hot plasmas has limited the x-ray conversion efficiency (CE) to 1% or less. Here we demonstrate more than one order of magnitude increase in picosecond x-ray CE by tailoring near solid density plasmas to achieve a large radiative to hydrodynamic energy loss rate ratio, leading into a radiation loss dominated plasma regime. A record 20% CE into hν > 1 keV photons was measured in arrays of large aspect ratio Au nanowires heated to keV temperatures with ultrahigh contrast femtosecond laser pulses of relativistic intensity. The potential of these bright ultrafast x-ray point sources for table-top imaging is illustrated with single shot flash radiographs obtained using low laser pulse energy. These results will enable the deployment of brighter laser driven x-ray sources at both compact and large laser facilities. © 2017 Optical Society of America. |
| title |
Efficient picosecond x-ray pulse generation from plasmas in the radiation dominated regime |
| title_short |
Efficient picosecond x-ray pulse generation from plasmas in the radiation dominated regime |
| title_full |
Efficient picosecond x-ray pulse generation from plasmas in the radiation dominated regime |
| title_fullStr |
Efficient picosecond x-ray pulse generation from plasmas in the radiation dominated regime |
| title_full_unstemmed |
Efficient picosecond x-ray pulse generation from plasmas in the radiation dominated regime |
| title_sort |
efficient picosecond x-ray pulse generation from plasmas in the radiation dominated regime |
| publishDate |
2017 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_23342536_v4_n11_p1344_Hollinger http://hdl.handle.net/20.500.12110/paper_23342536_v4_n11_p1344_Hollinger |
| _version_ |
1768543775550865408 |