Optical Seminar

11.10.2019
10:00
Begin
11.10.2019
10:00
Place

Lomonosova 9, room 2530

En
Faculty

1) Ivan Toftul (in English) 10:00 - 10:30

Light-induced rotation of dielectric microparticles around an optical nanofiber

 

Abstract

This talk is mainly about results which I got during my internship project at OIST (Okinawa, Japan) in the group led by prof. Sile Nic Chormaic. It is devoted to the experimental demonstration of the orbiting microparticles around an optical nanofiber that guides elliptically polarized fundamental modes. The driving transverse radiation force appears in the evanescent electromagnetic fields due to orbital angular momentum. The force direction is opposite to that of the energy flow circulation around the nanofiber. The results verify the theoretically predicted negative optical torque on a sufficiently large particle in the vicinity of a nanofiber. In this talk, I will discuss theoretical and experimental results, main concept of fabrication of nanofibers and physics behind observed optomechanical effect.

It is based on the recent arXive: https://arxiv.org/abs/1907.13363

 

​2) Artem Sinelnik (in Russian) 10:30 - 11:00

План развития тематики DLW на ФТФ

 

Аннотация

Доклад посвящен обсуждению перспективы развития технологии DLW на ФТФ. В первой части доклада я выделяю основные научные направления, в которых используется технология DLW, и представляю их краткий обзор. Также будет рассказано о нашем заделе и  исследованиях по данным направлениям. 

Во второй части обсуждаются проблемы установки DLW, имеющейся на ФТФ, и предложения по развитию данной технологии.

 

3) Dr. Dmitriy Permyakov (In Russian, Technical announcement for optical experimentators, non-mandatory for general audience) 11:00 - 11:15