Quantitative phase microscopy for nanophotonics | Dr. Guillaume Baffou скачать в хорошем качестве

Quantitative phase microscopy for nanophotonics | Dr. Guillaume Baffou

Dr. Guillaume Baffou, Institut Fresnel — CNRS, France. Optical Seminar at The Department of Physics & Engineering, ITMO | 07/10/2020 Title: "Quantitative phase microscopy for nanophotonics" --- Abstract: Quadriwave lateral shearing interferometry (QLSI) is a quantitative phase microscopy technique that enables the mapping of the wavefront distorsion of a light beam with both high spatial resolution and high sensitivity. In this presentation, I explain how QLSI recently proved efficient to advance the field of nanophotonics, namely, (i) how QLSI can be used as a temperature microscopy technique to map the temperature of gold nanoparticles under illumination, enabling applications in physics, chemistry and biology at the nano/microscale; (ii) how QLSI can measure the complex optical conductivity of 2D materials; (iii) and finally how QLSI can retrieve the complex optical polarizability of nanoparticles, along with the extinction, scattering and absorption cross section from a single interferogram image. 00:00:00 Start 00:00:11 Introduction to phase imaging 00:02:53 Part 1. Quadriwave lateral shearing interferometry (QLSI) introduction 00:05:25 Part 2. Nanoparticle imaging with QLSI 00:07:38 Question from the chat by Dr. Ivan Sinev 00:15:13 Questions by George Zograf 00:17:07 Part 3. QLSI for 2D materials 00:21:18 Questions by George Zograf 00:25:28 Question from the chat by Dr. Ivan Sinev 00:26:33 Part 4. Temperature measurements of plasmonics with QLSI 00:38:48 Part 5. Living cells heating and thermometry 00:45:28 End of the talk by Dr. Guillaume Baffou 00:45:43 Discussion with Dr. Ivan Sinev 00:48:46 Duestion by George Zograf 00:50:53 Closing remarks of the seminar The Department of Physics and Engineering of ITMO University (Saint Petersburg, Russia) hosts online weekly seminars to discuss recent scientific achievements of researchers from all over the world with a wide audience. The topics include experimental (Optical seminar) and theoretical (Theoretical seminar) aspects of nanophotonics, solid-state physics, material science, as well as design and applications of radiofrequency structures and devices (Microwave seminar). Upcoming and past events can be found at https://physics.itmo.ru/en/events   / metalab     / physics_ifmo     / meta.lab   #OpticalSeminar #ITMO #новыйфизтех #scientificseminar