Fabrication of surface nanoscale axial photonics (SNAP) structures with a femtosecond laser
Fangcheng Shen, Xuewen Shu, Lin Zhang, and M. Sumetsky
TL;DR
This paper presents the first successful fabrication of surface nanoscale axial photonics structures using a femtosecond laser, achieving subangstrom precision in creating microresonators with nanoscale radius variations.
Contribution
It introduces a novel femtosecond laser inscription method for fabricating SNAP structures with ultraprecise control of the effective radius variation.
Findings
Successful fabrication of SNAP microresonators with nanometer-scale radius variation
Demonstration of subangstrom precision in laser inscription
Potential for ultraprecise SNAP fabrication technology
Abstract
Surface nanoscale axial photonics (SNAP) structures are fabricated with a femtosecond laser for the first time. The inscriptions introduced by the laser pressurize the fiber and cause its nanoscale effective radius variation. We demonstrate the subangstrom precise fabrication of individual and coupled SNAP microresonators having the effective radius variation of several nanometers. Our results pave the way to a novel ultraprecise SNAP fabrication technology based on the femtosecond laser inscription.
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