Proceedings of the Korean Society of Precision Engineering Conference (한국정밀공학회:학술대회논문집)
- 2006.05a
- /
- Pages.209-210
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- 2006
- /
- 2005-8446(pISSN)
Micro-machining inside of a transparent glass
투명유리 내부의 컬러 미세형상 가공
- Kim Y.M. (Nano Machining Group, KIMM) ;
- Yoo B.H. (Nano Machining Group, KIMM) ;
-
Cho S.H.
(Nano Machining Group, KIMM)
;
-
Chng W.S.
(Nano Machining Group, KIMM)
;
-
Kim J.G.
(Nano Machining Group, KIMM)
;
-
Whang K.H.
(Nano Machining Group, KIMM)
- 김영미 (한국기계연구원 나노가공그룹) ;
- 유병헌 (한국기계연구원 나노가공그룹) ;
-
조성학
(한국기계연구원 나노가공그룹)
;
-
장원석
(한국기계연구원 나노가공그룹)
;
-
김재구
(한국기계연구원 나노가공그룹)
;
-
황경현
(한국기계연구원 나노가공그룹)
- Published : 2006.05.01
Abstract
We have successfully termed brown colored patterns inside of a transparent borosilicate glass generally known as BK7, laying the focus of near infrared Ti: sapphire femtosecond laser beam in the bulk BK7 glass. It is important to keep the laser power well below the damage threshold of BK7 in forming the color center. Thanks to the low laser power, there was no laser induced mechanical damage such as cracks or threads in the color formed area. From the absorbance spectrum and its gaussian fitting, we found the band gap of BK7, 4.21eV, and three absorption edges.
Keywords