Sruthil Lal SB

Sruthil Lal SB

Researcher in Nonlinear Optics

Pondicherry University

Biography

I am a Research Scholar at the Department of Physics, Pondicherry University. My present work focusses on probing the origin of optical nonlinearlities of different materials. Simulations based on DFT, TDDFT and Many-body perturbation are combined with experiments to understand the nonlinear optical response of material. My PhD dissertation primarily deals with the nonlinear optical response of anatase phase of TiO₂, investigated using femtosecond lasers and Real-time TDDFT simulations. I am expected to complete my dissertation by the end of this year (2022).

Interests

  • Nonlinear Optics
  • Density Functional Theory
  • Time-Dependent Density Functional Theory (TDDFT)

Education

  • PhD in Nonlinear Optics, 2023 (Expected)

    Pondicherry University

  • M. Sc in Physics, 2015

    Pondicherry University

  • BSc in Physics, 2013

    Calicut University

Recent Posts

Power Tools for discovering relevant literature

Not all papers you come across are going to be useful to you. Here are some tools that will help you efficiently explore research literature, analyze their connections with other papers, asses their significance/relevance within the domain and get the gist of papers without thoroughly reading them.
Dec 26, 2022 5 min read Literature, PhD Life, Academic, Tools
Power Tools for discovering relevant literature

Celebrating First Paper Publication

This is how proud I am of my first research publication. I am treating myself with a custom-made gift…The paper went through countless revisions and many rejections before finding a venue for publication. As this work came to fruition, it brought significant personal and professional transformation—shoutouts to all who have been a part of this challenging but satisfying journey to fruition.
Last updated on Dec 3, 2022 2 min read Well-being, PhD Life, Academic
Celebrating First Paper Publication

The First Post:- Why yet another Ph. D. blog?

After my profiles on ResearchGate, LinkedIn, Google Scholar, Twitter, ORCID…..I can’t wait to announce that I have finally put together a personal website and blog.
Nov 29, 2022 3 min read Well-being, PhD Life, Academic
The First Post:- Why yet another Ph. D. blog?

Projects

I have worked on multiple projects during my stint as a Ph. D. Researcher.

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All Electronic Structure Microbiology Polarimetry

Many-Body Perturbation Theory Calculations of Anatase TiO₂

Calculation of electronic structure and optical properties of anatase TiO₂ using Green’s function based methods.

Photodynamic Therapy

Antimicrobial photodynamic therapy (aPDT) is an emerging strategy to treat antibiotic resistant microorganisms.

Stokes-Mueller Polarimetry

We use the double Stokes–Mueller polarimetry (DSMP) technique, to characterize a large size (3x3x5 mm) Potassium titanyl phosphate (KTP) crystal. The crystal undergoes second harmonic generation with type II phase matching. The study of standard KTP crystal using the DSMP technique helps to validate the e±ciency of this technique.

Time-Dependent Density Functional Theory

Simulating laser-driven electron dynamics in solids using TDDFT

DFT simulation of anatase TiO₂

Optimization of structure of anatase TiO2 in the Ground state and its electronic and optical properties.

Recent Publications

Quickly discover relevant content by filtering publications.

Accurate determination of quasi-particle electronic and optical spectra of anatase titanium dioxide

The electronic structure and quasi-particle absorption spectra of anatase titanium dioxide has been calculated by employing state of the art density functional theory(DFT) and Many-Body Perturbation Theory methods(MBPT) within the framework of Hybrid Density Functional(HSE).
Sruthil Lal SB, Murali D, Matthias Posselt, Assa Aravindh Sasikala Devi, Alok Sharan A
Project DOI
Accurate determination of quasi-particle electronic and optical spectra of anatase titanium dioxide

Modified HSE06 functional applied to anatase TiO₂: influence of exchange fraction on the quasiparticle electronic structure and optical response.

The influence of non-interacting Kohn–Sham Hamiltonian on the non-self consistent GW(G 0 W 0) quasiparticle gap and Bethe–Salpeter-equation (BSE) optical spectra of anatase TiO2 is systematically evaluated. G 0 W 0 and BSE calculations are carried out starting with HSE06 (Heyd–Scuseria–Ernzerhof) type functionals containing 20%, 25% and 30% exact Hartree–Fock exchange.
Sruthil Lal SB, Murali D, Matthias Posselt, Assa Aravindh Sasikala Devi, Alok Sharan A
Project DOI
Modified HSE06 functional applied to anatase TiO₂: influence of exchange fraction on the quasiparticle electronic structure and optical response.

Study of a bi-axial (KTP) crystal using double Stokes–Mueller polarimetry

In this paper, we report the significance of the double Stokes–Mueller polarimetry (DSMP) technique, to characterize a large size (3×3×5mm) Potassium titanyl phosphate (KTP) crystal. The crystal undergoes second harmonic generation with type II phase matching. The study of standard KTP crystal using the DSMP technique helps to validate the efficiency of this technique.
Chitra Shaji, Sruthil Lal SB, Alok Sharan A
Project DOI
Study of a bi-axial (KTP) crystal using double Stokes–Mueller polarimetry
See all publications

Say hi 👋

Feel free to contact me :)

  • getsruthil@gmail.com
  • Room No: 201, Department of Physics, Pondicherry University, Puducherry 605014