Výsledky vyhledávání

Enhanced VUV-assisted high harmonic generation

Autor: M.P. Anscombe, A. Heinrich, W. Kornelis, Ursula Keller, Christoph P. Hauri, P. Schlup, Jens Biegert

Publikováno v: Journal of Physics B: Atomic, Molecular and Optical Physics. 39:S275-S281

We have enhanced extreme ultraviolet (XUV) harmonics around 90 eV in He using a combination of vacuum ultraviolet harmonics, generated in a Xe capillary, and the strong infrared (IR) laser pulse. With no changes in the IR input energy or the configur

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f926ace619e5cb8edd06c7ea447b252e
https://doi.org/10.1088/0953-4075/39/13/s03

Zobrazit plný text záznamu

Control of high-order harmonic emission using attosecond pulse trains

Autor: A. Heinrich, W. Kornelis, Christoph P. Hauri, Mette B. Gaarde, K. J. Schafer, P. Schlup, Ursula Keller, M.P. Anscombe, Jens Biegert

Publikováno v: Journal of Modern Optics. 53:87-96

We show that attosecond pulse trains are a natural tool to control strong field processes such as high-order harmonic generation. Coherently combining an attosecond pulse train with an IR driving field, we predict and experimentally confirm enhanceme

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dc7cb200c52b55ace8e4165ccf0686e8
https://doi.org/10.1080/09500340500167669

Zobrazit plný text záznamu

Self-compression of ultra-short laser pulses down to one optical cycle by filamentation

Autor: U. Keller, Christoph P. Hauri, Jens Biegert, Arnaud Couairon, André Mysyrowicz, W. Kornelis, F.W. Helbing

Publikováno v: Journal of Modern Optics
Journal of Modern Optics, Taylor & Francis, 2006, 53 (1), pp.75-85. ⟨10.1080/09500340500227760⟩

International audience; Theoretical studies of filamentation of ultra-short near-IR laser pulses propagating in a noble gas predict near single-cycle pulses with the intensity being clamped to the field ionization threshold. Experimental results show

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c2837a6079d1a8b23c306d49a0d96db
https://doi.org/10.1080/09500340500227760

Zobrazit plný text záznamu

Characterization of high-order harmonic radiation on femtosecond and attosecond time scales

Autor: Jens Biegert, Rodrigo Lopez-Martens, Per Johnsson, Anne L'Huillier, W. Kornelis, Ursula Keller, Johan Mauritsson, Mette B. Gaarde, Katalin Varjú, K. J. Schafer

Publikováno v: Scopus-Elsevier

We characterize the temporal structure of high-order harmonic radiation on both the femtosecond and attosecond time scales. The harmonic emission is characterized by mixed-color two-photon ionization with an infrared femtosecond laser using a Mach–

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13bf5815c4c693f2e1df14f8c0a0307c
https://doi.org/10.1007/s00340-004-1485-7

Zobrazit plný text záznamu

Production of selective high-order harmonics by filamentation in various gases

Autor: A. Heinrich, Jens Biegert, Christoph P. Hauri, André Mysyrowicz, Arnaud Couairon, W. Kornelis, Ursula Keller

Publikováno v: CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005..

Filamentation of intense laser pulses in various gases is demonstrated to generate selectively high-order harmonics. Wavelength-dependent enhancement and extinction of specific harmonics is controlled by gas choice and variation of gas pressure.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e68bacc29027cdb284d3b54677e81114
https://doi.org/10.1109/cleoe.2005.1568211

Zobrazit plný text záznamu

Control of high-order harmonic generation using attosecond pulse trains

Autor: A. Heinrich, W. Kornelis, C.P. Mauri, M.P. Anscombe, Jens Biegert, P. Schlup, Ursula Keller, K. J. Schafer, Mette B. Gaarde

Publikováno v: CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005..

We present a first experiment on attosecond pulse train (APT) assisted high-order harmonic generation, where the APT triggers the release of the electron into the continuum, which leads to an enhancement of harmonic yield.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::17e4ab1b408620fc1a5943121491821a
https://doi.org/10.1109/cleoe.2005.1568189

Zobrazit plný text záznamu

Intense CEO-phase-stabilized few-cycle pulses generated by filamentation

Autor: Arnaud Couairon, W. Kornelis, Jens Biegert, André Mysyrowicz, Christoph P. Hauri, Ursula Keller

Publikováno v: CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005..

Intense 5.7-fs pulses are generated through twofold filamentation in argon. Beyond beam quality and fluctuation measurements the system reliability is verified by scans of the initial laser chirp and gas pressures in the interaction chambers

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9248fbfa745adda2241b88620578071b
https://doi.org/10.1109/cleoe.2005.1568469

Zobrazit plný text záznamu

Generation of frequency-sheared XUV pulses by high harmonic generation

Autor: U. Keller, A. Heinrich, M.P. Anscombe, Jens Biegert, John W. G. Tisch, F.W. Helbing, P. Schlup, Christoph P. Hauri, W. Kornelis

Publikováno v: Scopus-Elsevier

Frequency-sheared and time-separated high harmonics were produced without spatial separation in the target gas by controlling the time-frequency properties of the driving field. Simulations show good agreement within the strong-field approximation.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::730af0394f01732e71d11d2e5c9aba70
https://doi.org/10.1109/qels.2005.1549343

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání