Laser Solutions (한국레이저가공학회지)

Korean Society of Laser Processing (한국레이저가공학회)
권호 표지

Fabrication of Diffraction Grating Mold Using Dot Pattern

도트 패턴을 이용한 회절 격자 금형 제작

  • Noh, Ji-Whan (IT Machinery Research Center Korea Institutue of Machinery & Material (KIMM)) ;
  • Lee, Jae-Hoon (IT Machinery Research Center Korea Institutue of Machinery & Material (KIMM)) ;
  • Sohn, Hyon-Kee (IT Machinery Research Center Korea Institutue of Machinery & Material (KIMM)) ;
  • Suh, Jeong (IT Machinery Research Center Korea Institutue of Machinery & Material (KIMM)) ;
  • Shin, Dong-Sig (IT Machinery Research Center Korea Institutue of Machinery & Material (KIMM)) ;
  • Joung, Young-Un (IT Machinery Research Center Korea Institutue of Machinery & Material (KIMM))
  • Published : 2006.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

Diffraction grating is the optical device which has periodic pattern. Decorative logotypes is the one of application of diffraction grating. In this paper diffraction grating for decorative logotype is fabricated by dot pattern in stead of line pattern. A metallic mold for diffraction gratings is fabricated with a mode-locked 12 ps Nd:YVO4 laser. Laser pulses with a wavelength of 355nm are irradiated on the surface of NOK 80, a mold material, to generate dot patterns. In order to minimize the dot diameter, laser power is set just above the ablation threshold of NOK 80. Results show that the spectrum from the fabricated mold is good enough for some industrial application

Keywords