Spatial and spectral properties of the high-order harmonic emission in argon for seeding applications
(2009) In Physical Review A (Atomic, Molecular and Optical Physics) 79(6).- Abstract
- We characterize and control the harmonic emission in the spectral and spatial domains in order to define in which conditions the harmonic radiation can be a high-quality seed for soft x-ray and x-ray free-electron lasers. The length of the gas cell, where harmonics are generated, was optimized and the energy per pulse was determined in absolute value with a calibrated x-ray photodiode. The beam spatial profile was measured and, in some conditions, a very collimated beam with a half-angle divergence below 1 mrad could be obtained. We also show that increasing the intensity of the fundamental laser field leads to a considerable broadening of the bandwidth of the harmonic radiation, allowing us to cover a large spectral range. This effect is... (More)
- We characterize and control the harmonic emission in the spectral and spatial domains in order to define in which conditions the harmonic radiation can be a high-quality seed for soft x-ray and x-ray free-electron lasers. The length of the gas cell, where harmonics are generated, was optimized and the energy per pulse was determined in absolute value with a calibrated x-ray photodiode. The beam spatial profile was measured and, in some conditions, a very collimated beam with a half-angle divergence below 1 mrad could be obtained. We also show that increasing the intensity of the fundamental laser field leads to a considerable broadening of the bandwidth of the harmonic radiation, allowing us to cover a large spectral range. This effect is due to fundamental reshaping leading to an efficient phase matching of both short- and long-trajectory contributions. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1462386
- author
- organization
- publishing date
- 2009
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- atom-photon collisions, argon, laser beams, generation, optical phase matching, optical harmonic
- in
- Physical Review A (Atomic, Molecular and Optical Physics)
- volume
- 79
- issue
- 6
- publisher
- American Physical Society
- external identifiers
-
- wos:000267700100179
- scopus:67649306843
- ISSN
- 1050-2947
- DOI
- 10.1103/PhysRevA.79.063829
- language
- English
- LU publication?
- yes
- id
- 5938a14e-97c2-4953-bf9d-96cb9a33f29a (old id 1462386)
- date added to LUP
- 2016-04-01 12:08:06
- date last changed
- 2022-01-26 23:19:35
@article{5938a14e-97c2-4953-bf9d-96cb9a33f29a, abstract = {{We characterize and control the harmonic emission in the spectral and spatial domains in order to define in which conditions the harmonic radiation can be a high-quality seed for soft x-ray and x-ray free-electron lasers. The length of the gas cell, where harmonics are generated, was optimized and the energy per pulse was determined in absolute value with a calibrated x-ray photodiode. The beam spatial profile was measured and, in some conditions, a very collimated beam with a half-angle divergence below 1 mrad could be obtained. We also show that increasing the intensity of the fundamental laser field leads to a considerable broadening of the bandwidth of the harmonic radiation, allowing us to cover a large spectral range. This effect is due to fundamental reshaping leading to an efficient phase matching of both short- and long-trajectory contributions.}}, author = {{He, Xinkui and Miranda, Miguel and Schwenke, Jörg and Guilbaud, Olivier and Ruchon, Thierry and Heyl, C. and Georgiadou, Elisavet and Rakowski, Rafal and Persson, Anders and Gaarde, Mette and L'Huillier, Anne}}, issn = {{1050-2947}}, keywords = {{atom-photon collisions; argon; laser beams; generation; optical phase matching; optical harmonic}}, language = {{eng}}, number = {{6}}, publisher = {{American Physical Society}}, series = {{Physical Review A (Atomic, Molecular and Optical Physics)}}, title = {{Spatial and spectral properties of the high-order harmonic emission in argon for seeding applications}}, url = {{https://lup.lub.lu.se/search/files/2796056/2005659.pdf}}, doi = {{10.1103/PhysRevA.79.063829}}, volume = {{79}}, year = {{2009}}, }