events

LAMMP/BME Seminar Series

Friday 23rd of March 2018
11:30 AM
Beckman Laser Institute Library

Photonics Fabrication and Integration with Ultrafast Lasers, Optical Differentiation Wavefront Sensing

Jie Qiao, PhD, MBA
Rochester Institute of Technology Center for Imaging Science


The research on ultrafast-laser-based photonics fabrication and integration is highly interdisciplinary, intersecting applied physics, photonics, lasers, materials, precision controls, and imaging. The first part of the talk presents computational models, systems and physical processes on using ultrafast lasers to fabricate photonic devices and/or optical components, and the associated applications. The second part of the talk presents a new optical differentiation wavefront sensing technique based on far-field spatial modulation using a binary pixelated filter to introduce a linear amplitude transmission. This sensor is expected to offer phase measurement with higher spatial resolution, higher dynamic range and higher signal-to-noise ratio for astronomy, surface metrology, vison correction and phase imaging for biological cells. The last part of the talk focuses on coherent phasing of large-aperture optics and the realization of a 1.5-meter scale grating with three coherently phased segments, the design of deformable gratings for generating kilojoule, petawatt laser pulses and for creating next-generation multiple-meter-scale telescopes.