Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Lasse Haahr-Lillevang"'
Autor:
Xinyang Gao, Yubin Zhang, Lasse Haahr-Lillevang, Nikolaj Kjelgaard Vedel-Smith, Tito Andriollo
Publikováno v:
Heliyon, Vol 9, Iss 12, Pp e23186- (2023)
Although much research has focused on AlSi10Mg processed via laser-based powder bed fusion, the material deformation mechanisms at the microscale are still unclear. To improve the current understanding, 3D measurements of the strain field at the micr
Externí odkaz:
https://doaj.org/article/442103c748e44d1c9e59db185a12b9f5
Autor:
Lasse Haahr-Lillevang, Ellen M. J. Hedegaard, Anders Bæk Hjermitslev, Christopher Gottlieb Klingaa, Nikolaj K. Vedel-Smith
Publikováno v:
BHM Berg- und Hüttenmännische Monatshefte.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d0c723e176504ed4ec68e173bdf5bf1
https://doi.org/10.1007/s00501-023-01356-1
https://doi.org/10.1007/s00501-023-01356-1
Autor:
Thomas Baumert, Peter Balling, Lasse Haahr-Lillevang, Cristian Sarpe, Arne Senftleben, Nadine Götte, Bastian Zielinski, Thomas Winkler
Publikováno v:
Winkler, T, Haahr-Lillevang, L, Sarpe, C, Zielinski, B, Goette, N, Senftleben, A, Balling, P & Baumert, T 2018, ' Laser amplification in excited dielectrics ', Nature Physics, vol. 14, no. 1, pp. 74-79 . https://doi.org/10.1038/NPHYS4265
Wide-bandgap dielectrics such as glasses or water are transparent at visible and infrared wavelengths. This changes when they are exposed to ultrashort and highly intense laser pulses. Different interaction mechanisms lead to the appearance of variou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d929899556f48a0d696d919c639ab55
https://doi.org/10.1038/nphys4265
https://doi.org/10.1038/nphys4265
Autor:
Jan Siegel, Stéphane Guizard, Mario Garcia-Lechuga, Peter Balling, Lasse Haahr-Lillevang, Javier Solis
Publikováno v:
Garcia-Lechuga, M, Haahr-Lillevang, L, Siegel, J, Balling, P, Guizard, S & Solis, J 2017, ' Simultaneous time-space resolved reflectivity and interferometric measurements of dielectrics excited with femtosecond laser pulses ', Physical Review B, vol. 95, no. 21, 214114 . https://doi.org/10.1103/PhysRevB.95.214114
Digital.CSIC. Repositorio Institucional del CSIC
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Digital.CSIC. Repositorio Institucional del CSIC
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13 pags., 7 figs., 1 tab.
Simultaneous time-and-space resolved reflectivity and interferometric measurements over a temporal span of 300 ps have been performed in fused silica and sapphire samples excited with 800 nm, 120 fs laser pulses at ener
Simultaneous time-and-space resolved reflectivity and interferometric measurements over a temporal span of 300 ps have been performed in fused silica and sapphire samples excited with 800 nm, 120 fs laser pulses at ener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77fb8705d99a4fadfe0492f656f52470
http://hdl.handle.net/10261/163983
http://hdl.handle.net/10261/163983
Publikováno v:
Wædegaard, K J, Sandkamm, D B, Haahr-Lillevang, L, Bay, K G & Balling, P 2014, ' Modeling short-pulse laser excitation of dielectric materials ', Applied Physics A: Materials Science & Processing . https://doi.org/10.1007/s00339-014-8231-8
A theoretical description of ultrashort-pulse laserexcitation of dielectric materials based on strong-field excitationin the Keldysh picture combined with a multiple-rateequationmodel for the electronic excitation including collisionalprocesses is pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5e1304b780fbe9fcc87db80d173bc2c5
https://doi.org/10.1007/s00339-014-8231-8
https://doi.org/10.1007/s00339-014-8231-8
Publikováno v:
Rämer, A, Haahr-Lillevang, L, Rethfeld, B & Balling, P 2016, ' Modeling the transient optical parameters in laser-excited band gap materials ', Optical Engineering, vol. 56, no. 1, 011015 . https://doi.org/10.1117/1.OE.56.1.011015
When band gap materials are irradiated with an ultrashort laser pulse, the free-carrier density increases tremendously. The resulting abrupt transformation from an insulator to a conducting material, where a large portion of the electrons is excited
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10914703313b1bfacfb139ac837af2ec
https://pure.au.dk/portal/da/publications/modeling-the-transient-optical-parameters-in-laserexcited-band-gap-materials(fb82d10b-6ff6-406e-8223-f7267e80cd11).html
https://pure.au.dk/portal/da/publications/modeling-the-transient-optical-parameters-in-laserexcited-band-gap-materials(fb82d10b-6ff6-406e-8223-f7267e80cd11).html
Autor:
Peter Balling, Lasse Haahr-Lillevang
Publikováno v:
Haahr-Lillevang, L & Balling, P 2015, ' Ultrashort-pulse laser excitation and damage of dielectric materials : Experiments and modeling ', Proceedings of SPIE, the International Society for Optical Engineering, vol. 9532, 953213 . https://doi.org/10.1117/12.2185834
Ultrashort-pulse laser excitation of dielectrics is an intricate problem due to the strong coupling between the rapidly changing material properties and the light. In the present paper, details of a model based on a multiple-rate-equation description
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2ebf065686521f583fa0076e67652e25
https://pure.au.dk/portal/da/publications/ultrashortpulse-laser-excitation-and-damage-of-dielectric-materials(9ca7943f-104b-47f6-a327-37ea3d8c8ad3).html
https://pure.au.dk/portal/da/publications/ultrashortpulse-laser-excitation-and-damage-of-dielectric-materials(9ca7943f-104b-47f6-a327-37ea3d8c8ad3).html
Autor:
Lasse Haahr-Lillevang, Peter Balling, D. B. Sandkamm, Stéphane Guizard, Alexandros Mouskeftaras, Kristian J. Waedegaard
Publikováno v:
Haahr-Lillevang, L, Wædegaard, K, Sandkamm, D B, Mouskeftaras, A, Guizard, S & Balling, P 2015, ' Short-pulse laser excitation of quartz : experiments and modelling of transient optical properties and ablation ', Applied Physics A: Materials Science & Processing, vol. 120, no. 4, pp. 1221-1227 . https://doi.org/10.1007/s00339-015-9307-9
Time-resolved optical studies using spectral interferometry and reflectance measurements of ultrafast laser excitation of quartz have been performed and combined with subsequent atomic force microscopy imaging of the laser-formed holes. A comprehensi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e31a62cae32717ce81b5f4d7305a43a
https://pure.au.dk/portal/da/publications/shortpulse-laser-excitation-of-quartz(03fc3355-a88f-4240-839a-864549530eb0).html
https://pure.au.dk/portal/da/publications/shortpulse-laser-excitation-of-quartz(03fc3355-a88f-4240-839a-864549530eb0).html