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Thomas Pohl

Evanescent fields of laser written waveguides

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We investigate the evanescent field at the surface of laser written waveguides. The waveguides are written by a direct femtosecond laser writing process into fused silica, which is then sanded down to expose the guiding layer. These waveguides support eigenmodes which have an evanescent field reaching into the vacuum above the waveguide. We study the governing wave equations and present solution for the fundamental eigenmodes of the modified waveguides.

Original languageEnglish
JournalProceedings of SPIE
Number of pages9
Publication statusPublished - 2015
Externally publishedYes
EventConference on Complex Light and Optical Forces IX - San Francisco, Canada
Duration: 11 Feb 201512 Feb 2015


ConferenceConference on Complex Light and Optical Forces IX
CitySan Francisco

    Research areas

  • Optical waveguides, Material processing, Evanescent waves, BEAMS

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