Nanoscale Raman Spectroscopy - from apertures to tips

报告人

Prof. Volker Deckert

Friedrich-Schiller University in Jena，

Germany

时间

2025年12月9日（星期二）上午9：30

地点

物质科学教研楼B902会议室

报告摘要

Since the initial introduction of confocal Raman microscopy in the late 1970ies, there was a push for higher and higher spatial resolution in vibrational, specifically Raman spectroscopy.  The experimental realization of sub-diffraction limit optical resolution, started the advent of near-field optics and allowed resolutions in the range of < 100 nm. Application to Raman spectroscopy required to address the high losses in the apertures. In addition the use of plasmon resonances considerably helped to boost the signal allow hyper spectral Raman imaging well below the diffraction limit. For ~5 years this was the standard for high resolution Raman, then apertureless or so-called scattering type probes were used and since then dominates the high lateral resolution Raman field.