Abstract

Research on ultrafast-laser-based fabrication of integrated photonic devices combines applied physics, photonics, lasers, materials, and imaging. This talk presents methods, computational models, physical processes and diagnostics related to such fabrication, including direct writing of waveguides and lasers, polishing and micro-joining of optical components. Simulations using unidirectional beam propagation equations and fabrication of low-loss devices in a crystal material will be presented. Waveguide lasers suitable for quantum sources can be potentially achieved by integrating these technologies. A pump-probe microscope for measuring the dynamics of femtosecond laser interactions, and a new optical differentiation wavefront-sensing technique based on far-field spatial modulation using a binary pixelated filter, will also be presented.