Internal modification in transparent materials using plasma formation induced by a femtosecond laser

• 발행기관: 한국레이저가공학회
• 저자명: Jung-Kyu Park Ji-Wook Yoon Sung-Hak Cho
• 간행물 정보: 『한국레이저가공학회지』한국레이저가공학회지 제15권 제1호, 15~19쪽, 전체 5쪽
• 주제분류: 공학 > 기계공학
• 파일형태: PDF
• 발행일자: 2012.03.31

영문 초록

The fabrication of internal diffraction gratings with photoinduced refractive index modification in transparent materials was demonstrated using low-density plasma formation excited by a femtosecond (130 fs) Ti: sapphire laser (λ_p=800 nm). The refractive index modifications with diameters ranging from 1 μm to 3 μm were photoinduced after plasma formation occurred upon irradiation with peak intensities of more than 2.0×10¹³ W/㎠. The graded refractive index profile was fabricated to be a symmetric around from the center of the point at which low-density plasma occurred.

목차

Abstract

1. Introduction

2. Experimental Setup

3. Experimental Results and Discussion

4. Conclusion

REFERENCES

키워드

femtosecond laser plasma formation internal diffraction gratings refractive index modification transparent materials1