PhD12: Sacha Grelet

Host: NKT Photonics 

Secondment: University of Kent, Applied Optics Group (AOG)

PhD Project: Time Stretched Pulse Supercontinuum (SPSC) swept laser source

During the last years, the progress in All-Normal Dispersion (ANDi) fiber manufacturing lead to a new technique to generate low-noise supercontinuum sources. These broadband lasers can be used in Optical Coherent Tomography (OCT) systems to get high resolution and high sensitivity imaging. Another technique called time-stretch allows overcoming one of the bottlenecks of OCT: the lack of high speed, high sensitivity detector and digitizers. In this project, we aim to build low noise, near-visible IR sources that combine the strength of the ANDi Supercontinuum and Time Stretch to improve the capabilities of OCT systems.

Education:

Sacha obtained his engineering degree from Telecom Saint Etienne (France) with a major in Photonics and minors in Computer Science and Image Processing. He spent his fifth year at the University of Laval (Qu├ębec, Canada) to specialize in laser science and nonlinear effects in fiber optics. To complete his education in this field, he did a six months internship at Alphanov (Bordeaux, France) on the design of stable passively mode-locked fiber laser.

Contact: sagr@nktphotonics.com