Hinweis zum Urheberrecht
Aufsatz zugänglich unter
URN: urn:nbn:de:bvb:29-opus-31525
URL: http://www.opus.ub.uni-erlangen.de/opus/volltexte/2012/3152/
Evaluation of nonlinear absorptivity in internal modification of bulk glass by ultrashort laser pulses
Miyamoto, Isamu ;
Cvecek, Kristian ;
Schmidt, Michael
| Originalveröffentlichung: |
| (2011) Optics Express 19.11 (2011): S. 10714-10727. 23.03.2012 <http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-19-11-10714> |
| pdf-Format:
|
|
|
| SWD-Schlagwörter: |
| Lasertechnologie , Aktives Medium , Nichtlineare Optik |
| Freie Schlagwörter (Englisch): |
| Laser materials processing , Laser-induced breakdown , Ultrafast lasers , Glass and other amorphous materials , Multiphoton processes |
| Collection: |
| Universität Erlangen-Nürnberg / Von der FAU geförderte Open Access Artikel / 2011 |
| Fakultät: |
| Naturwissenschaftliche Fakultät |
| DDC-Sachgruppe: |
| Naturwissenschaften |
| Dokumentart: |
| Aufsatz |
| Sprache: |
| Englisch |
| Erstellungsjahr: |
| 2011 |
| Publikationsdatum: |
| 23.03.2012 |
| Kurzfassung in Englisch: |
| Thermal conduction model is presented, by which nonlinear absorptivity of ultrashort laser pulses in internal modification of bulk glass is simulated. The simulated nonlinear absorptivity agrees with experimental values with maximum uncertainty of ±3% in a wide range of laser parameters at 10ps pulse duration in borosilicate glass. The nonlinear absorptivity increases with increasing energy and repetition rate of the laser pulse, reaching as high as 90%. The increase in the average absorbed laser power is accompanied by the extension of the laser-absorption region toward the laser source. Transient thermal conduction model for three-dimensional heat source shows that laser energy is absorbed by avalanche ionization seeded by thermally excited free-electrons at locations apart from the focus at pulse repetition rates higher than 100kHz. |
Sie benötigen weitere Informationen?
Fragen Sie uns!