In 1996, it was demonstrated that focussed infrared femtosecond laser pulses can induce a local internal increase in the refractive index of bulk transparent glasses. This discovery offered unique opportunities for the fabrication of arbitrary 3D photonic waveguide devices inside a wide range of materials simply by translating a sample through the focal point of a focussed femtosecond laser beam. Not only can this direct-write technique be carried out rapidly, it is readily compatible with existing fibre systems, it does not require a lithographic mask and it can be conducted in a regular laboratory environment with the minimum of sample preparation. This presentation explores the contributions, carried out at the CUDOS at Macquarie University, to the field of femtosecond laser direct-written waveguide devices and an outlook into future investigations. In particular, studies into writing polarisation, directional couplers, waveguide Bragg gratings, waveguide amplifiers and waveguide laser oscillators will be presented.
|Number of pages||1|
|Publication status||Published - 2009|
|Event||LEOS technical meeting on "Technology and applications of ultrafast laser inscription" - Edinburgh, Scotland|
Duration: 6 Jul 2009 → 6 Jul 2009
|Conference||LEOS technical meeting on "Technology and applications of ultrafast laser inscription"|
|Period||6/07/09 → 6/07/09|