Web-colloquium on Light-matter interaction at nanoscale on July 22-25,2021

Nanophotonics is the field of science and technology based on the peculiar properties of light and light-matter interaction in various nanostructures. Studies in light-matter interaction forms a core area of research in atomic, molecular and optical sciences encircling a wide range of interdisciplinary fields. A web-colloquium in this emerging area planned to expose Msc Physics students, research scholars in Physics or Materials Science, and young faculty members of colleges/ university departments to some of these topics of light-matter interactions, thereby motivating them towards the excitement of the research in this field.

Nanophotonics can be tentatively divided into the following sections.

  • Quantum confinement effects generally in semiconductor and dielectric materials, due to the electron confinement effects on the optical properties of matter. This leads to optical absorption spectra and emission spectra for nanometer sized particles, with tunable size dependent optical properties leading to a variety of applications
  • Light wave confinement effects in structured dielectrics, based entirely on wave optics and classical in nature. Dates back to light interference phenomena by Isaac Newton and the reflective properties of periodic media by Lord Rayleigh. Photonic circuitry, waveguides, etc are the outcomes.
  • Quantum optics of nanostructures based on the modified light-matter interaction with confined light waves. Here, spontaneous emission and scattering of light becomes controllable by engineering photon density of states. The outcome is the confined light–matter states in microcavities and photonic crystals, the concept of photonic crystals.
  • Electron excitations by confining light at metal-dielectric nanostructures. Importance of surface effect by structuring metal-dielectric composites resulting in the important phenomena of surface plasmons. This area has been emerging into the important field of nanoplasmonics; the plasmonic devices are capable of subwavelength confinement.

Experts in the respective fields will lead the lectures in the following or other topics related to the above.

  • Basic properties of quantum particles and light waves
  • uantum confinement phenomena in semiconductor nanocrystals (quantum dots)
  • Nanoplasmonics: metal nanoparticles, metal–dielectric nanostructures
  • Light Transport in random optical media
  • Light in periodic structures: photonic crystals
  • Evanescent wave & Tunneling of light
  • Light – matter interaction: introductory quantum electrodynamics
  • Density of states: effects on optical processes in mesoscopic structures
  • Plasmonic enhancement of luminescence and Raman scattering
  • Optical Materials and devices

Dates : 22-25 July 2021
Target group: MSc Physics students, researchers and young faculty members
No registration fee


  1. Prof C Vijayan, IIT Madras, Chennai
  2. Dr Sandip Dhara, IGCAR, Kalpakom
  3. Prof. R. Vijaya, IIT Kanpur, Kanpur
  4. Prof. Raj Kumar Gupta, BITS Pilani
  5. Prof. P. Ravindran, Central University of Tamil Nadu, Chennai
  6. Prof. Chandrabhas Narayana, RGCB, Thiruvananthapuram
  7. Prof. Jayeeta Bhattacharya, IIT Madras, Chennai
  8. Prof. Sushil Mujumdar, TIFR, Mumbai
  9. Prof Almut Beige, University of Leeds, UK
  10. Prof. Gin Jose, University of Leeds, UK