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Polarization effects in ultrashort-pulse laser drilling (1999)

Nolte, S. ; Momma, C. ; Kamlage, G. ; [et al.]

Springer

Applied physics 68 (1999), S. 563-567

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ISSN: 1432-0630

Keywords: PACS: 79.20.D; 42.62.C

Source: Springer Online Journal Archives 1860-2000

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics

Notes: Abstract. 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.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/s003390050941

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