유전율 변화에 따른 레이저 빔의 투과 및 산란경향에 NIR 대한 연구 (A Comparative Study on Laser Beam Scattering through Various Dielectric Materials by NIR Laser Beam)

서지정보

· 발행기관 : 한국기계가공학회
· 수록지 정보 : 한국기계가공학회지 / 22권 / 6호 / 62 ~ 67페이지
· 저자명 : 김종현, 최해운

초록

Laser beam scattering can be used to modify the surface properties of materials. Periodic nanopatterns can beeither directly or indirectly fabricated. However, collective oscillations of electrons at the interface of a metaland a dielectric material can be fabricated on a substrate using surface plasmons. A computer simulation resultsof laser beam transmission and scattering for aluminum, copper, Al2O3 and glass is carried out. The resultsshowed that in the metallic materials coated slits, the laser beam intensity is amplified in the slit compared tothe in port by 47.7% for aluminium and 49.2% for copper. However, significant loss was found at both aluminaand glass slit material. The intensity of the E-field at the out port is weakened to about 50% for the metallicmaterials, compared to 66% and 87% for Al2O3 and glass. It was concluded that the laser beams are stronglydiffracted right after metallic slits which can primarily cause scattering.

영어초록

Laser beam scattering can be used to modify the surface properties of materials. Periodic nanopatterns can beeither directly or indirectly fabricated. However, collective oscillations of electrons at the interface of a metaland a dielectric material can be fabricated on a substrate using surface plasmons. A computer simulation resultsof laser beam transmission and scattering for aluminum, copper, Al2O3 and glass is carried out. The resultsshowed that in the metallic materials coated slits, the laser beam intensity is amplified in the slit compared tothe in port by 47.7% for aluminium and 49.2% for copper. However, significant loss was found at both aluminaand glass slit material. The intensity of the E-field at the out port is weakened to about 50% for the metallicmaterials, compared to 66% and 87% for Al2O3 and glass. It was concluded that the laser beams are stronglydiffracted right after metallic slits which can primarily cause scattering.

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