Laser Scanning-Assisted Tip-Enhanced Optical Microscopy for Robust Optical Nanospectroscopy
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Updated: Mar 17, 2026
A Multimodal Wide-Field Fourier-Transform Raman Microscope
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Taka-Aki Yano1, Yuta Tsuchimoto2, Masahito Mochizuki2
1School of Materials and Chemical Technology, Tokyo Institute of Technology, Yokohama, Japan RIKEN, Wako, Japan yano@echem.titech.ac.jp.
Abstract:
Laser-scanning-assisted tip-enhanced optical microscopy was developed for robust optical nanospectroscopy. The laser-scanning system was utilized to automatically set and keep the center of a tight laser-focusing spot in the proximity of a metallic tip with around 10 nm precision. This enabled us to efficiently and stably induce plasmon-coupled field enhancement at the apex of the metallic probe tip. The laser-scanning technique was also applied to tracking and compensating the thermal drift of the metallic tip in the spot. This technique is usable for long-term tip-enhanced optical spectroscopy without any optical degradation.
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