Presentation Information
[23a-11F-5]Generation and propagation of surface-enhanced hyper-Raman light in the nanogap between parallelly aligned multiple silver nanowires
〇Tamitake Itoh1, Yamamoto Yuko S.2 (1.AIST, 2.JAIST)
Keywords:
plasmon resonance,nanowires,surface-enhanced hyper-Raman scattering
A extremely strong electric field enhanced by plasmon resonance exists within the gap of gold or silver nanoparticles (NPs) dimer. In the case of a gap between multiple nanowires (NWs) parallelly arranged close to each other, this HS is one-dimensionally (1D) extended by approximately 10^4 times. This 1D HS has been applied to surface-enhanced Raman scattering (SERS), etc. In this study, we found that the edge of 1D HS containing dye molecules exhibited surface-enhanced hyper-Raman scattering (SEHRS) light with excitation of near-infrared continuous (NIR cw) light, even SEHRS normally requires high-intensity pulsed laser excitation. We also observed that the SEHRS light propagates through 1D HS. These findings were investigated by electromagnetic calculations to clarify their mechanisms.