Polarization effects in ultrashort-pulse laser drilling

Autor:	Andreas Ostendorf, Carsten Momma, Stefan Nolte, G. Kamlage, F. von Alvensleben, Herbert Welling, Carsten Fallnich
Rok vydání:	1999
Předmět:	Trepanning Materials science business.industry Far-infrared laser Laser beam machining General Chemistry Radiation Laser Polarization (waves) law.invention Optics law General Materials Science business Laser drilling Ultrashort pulse laser
Zdroj:	Applied Physics A: Materials Science & Processing. 68:563-567
ISSN:	1432-0630 0947-8396
DOI:	10.1007/s003390050941
Popis:	A strong influence of the polarization of the laser radiation on the geometry of laser-machined microdrillings has been observed for ultrashort pulses. For drillings with a certain aspect ratio, reflections at the hole walls take place, leading to a non-uniform intensity distribution deep inside the formed hole. Experimental and theoretical results on this subject are discussed. It is shown that a rotation of the polarization during the drilling process (“polarization trepanning”) significantly improves the quality of the produced holes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b3d470c975049a907d68f42b5c2eb97a https://doi.org/10.1007/s003390050941 Zobrazit plný text záznamu Plný text ve formátu PDF