5 April 1996 Energy dissipation in NSOM probe fiber tapers: ray-tracing assessment
Author Affiliations +
Proceedings Volume 2677, Biomedical Fiber Optics; (1996); doi: 10.1117/12.237562
Event: Photonics West '96, 1996, San Jose, CA, United States
We use a ray tracing technique in order to analyze the optical throughput and the side wall energy deposition for the glass fiber probes used in the near-field scanning optical microscopy (NSOM). It is shown that the significant part of the light can be dissipated tens or even hundreds of microns away from the probe apex due to absorption by metal coating. The results also indicate that a substantial part of the light coupled into the fiber probe is reflected back. The analysis elucidates the 'far-field' causes for a low throughput of NSOM probes and their overheating. The ways of further probe geometry and structure improvement are outlined.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
P. Oscar Boykin, Michael A. Paesler, Boris I. Yakobson, "Energy dissipation in NSOM probe fiber tapers: ray-tracing assessment", Proc. SPIE 2677, Biomedical Fiber Optics, (5 April 1996); doi: 10.1117/12.237562; https://doi.org/10.1117/12.237562

Near field scanning optical microscopy

Ray tracing

Refractive index

Geometrical optics



Near field optics

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