Menu

Dear All,

SOLID STATE & STRUCTURAL CHEMISTRY UNIT

INDIAN INSTITUTE OF SCIENCE

BANGALORE – 560 012

SEMINAR
Speaker: Mr. Kanad Majumder

Title

Attosecond Spectroscopy

Date & Time: Thursday 7th March, 2019 at 4.00 PM

Venue: SSCU AUDITORIUM

Abstract:

Pioneered by A. H. Zewail, nuclear motion in biomolecules as well as the formation and rupture of chemical bonds have been accessed extensively by femtosecond pump-probe spectroscopy. However, the resolution offered by femtosecond spectroscopy is insufficient to track the dynamics of electronic motion in atoms or molecules since they evolve on an attosecond to few-fs time scale and thus remain elusive so far.

In this talk, I will introduce the concept of 1,2streaking spectroscopy as a pump-probe spectroscopic technique to investigate electron correlations with attosecond resolution. I will also discuss the generation of attosecond extreme ultraviolet (XUV) pulses using 3high harmonic generation (HHG). Finally, I will briefly explain the recent studies on 4breakdown of single active-electron approximation in photoelectron emission by recording up to few attosecond retardation of the dislodged photoelectron due to electronic correlations.

References:

1. Moulet, A. et al. Invited Article: Attosecond photonics: Synthesis and control of light transients. Rev. Sci. Instrum. 83, 111301 (2012).

2. Goulielmakis, E. et al. State-of-the-art attosecond metrology. J. Electron Spectros. Relat. Phenomena 184, 68–77 (2011).

3. R. W. Boyd. Nonlinear Optics. (Academic Press, 2003).

4. Ossiander, M. et al. Attosecond correlation dynamics. Nat. Phys. 13, 280–285 (2016).

ALL ARE CORDIALLY INVITED TO ATTEND

Convener

Bitnami