Technology Optimization ot the Laser-Assisted SNOM-Tips Stretching

摘要

Nowadays the near-field optical probe (NOP) for SNOM (scanning near-field optical microscopy) is mainly produced from optical fibers. The laser technology of NOP manufacturing is based on the local fiber area heating and following force stretching up to brake. Therefore the experimental setup consists of an optical scheme and mechanical system which are due to provide the local source of heat on the fiber surface and a proper regime of force application. As the NOP's geometric parameters principally determine the SNOM efficiency and, on the other hand, they are fully dependent on the manufacturing conditions it is important to find the optimal setup solution. While studying already existing schemes, we are making an attempt to find such a solution by taking care of precise mechanics capable of symmetrical pulling performance and developing a non-standard optical scheme for determined local uniform illumination of the fiber.