Laser Solutions (한국레이저가공학회지)
- Volume 12 Issue 1
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- Pages.14-18
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- 2009
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- 1229-0963(pISSN)
Ripple Formation and Polarization Effects in Femtosecond Laser Drilling
펨토초 레이저에 의한 SUS 가공 특성 및 리플 생성
-
Son, Ik-Bu
(Advanced Photonics Research Institute, GIST)
;
- Go, Myeong-Jin (Advanced Photonics Research Institute, GIST) ;
-
Kim, Yeong-Seop
(Advanced Photonics Research Institute, GIST)
;
-
No, Yeong-Cheol
(Advanced Photonics Research Institute, GIST)
-
손익부
(광주과학기술원 고등광기술연구소 미세광학연구실)
;
- 고명진 (광주과학기술원 고등광기술연구소 미세광학연구실) ;
-
김영섭
(광주과학기술원 고등광기술연구소 미세광학연구실)
;
-
노영철
(광주과학기술원 고등광기술연구소 미세광학연구실)
- Published : 2009.03.31
Abstract
Ripple formation of femtosecond laser in stainless steel is investigated using 184 fs pulses with a center wavelength of 785 nm. The effect of the laser polarization relative to the translation direction is observed. For drilling with a certain aspect ratio, reflections at the hole walls take place, leading to a non-uniform intensity distribution deep inside the formed hole. Finally, it is shown that a circular polarization during the drilling process significantly improves the quality of the produced holes.