금 박막에서 표면 플라즈몬 공명과 국소적 밴드 간 천이의 상호작용
Interaction Between Surface Plasmon Resonance and Inter-band Transition in Gold Thin Film
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The effect of inter-band transition on surface plasmon resonance in gold thin film was investigated. We induced localized inter-band transition in the film by using incident light on its surface from a green laser (532 nm) source, and the surface plasmon resonance forinter-band transition was investigated at different wavelengths. It was determined that the reflectivity of blue light (450 nm) was sig-nificantly reduced in the region where the green laser was incident. We demonstrated that this decrease is mainly due to the couplingbetween the blue light and the surface plasmon resonance of excited electrons in higher energy states, based on experimental results for the incident and polarization angle-dependent reflectivity of the blue light.
Abstract
The effect of inter-band transition on surface plasmon resonance in gold thin film was investigated. We induced localized inter-band transition in the film by using incident light on its surface from a green laser (532 nm) source, and the surface plasmon resonance forinter-band transition was investigated at different wavelengths. It was determined that the reflectivity of blue light (450 nm) was sig-nificantly reduced in the region where the green laser was incident. We demonstrated that this decrease is mainly due to the couplingbetween the blue light and the surface plasmon resonance of excited electrons in higher energy states, based on experimental results for the incident and polarization angle-dependent reflectivity of the blue light.
참고문헌 (15)
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