Research

Key Research Areas

Plasmonics and Metamaterial integrated Photonics

Mid-IR and Terahertz (THz) Photonics

Guided wave devices in metals and semiconductors

Ultrafast spectroscopy including time-resolved spectroscopy, THz-time domain spectroscopy, optical pump terahertz probe spectroscopy

Terahertz spectrosocpy using asynchronous optical sampling (ASOPS)

Nanoporous silicon and applications in biochemical sensors

Plasmonic solar cell devices

Surface plasmon assisted surface enhanced Raman scattering (SERS), electron acceleration, filamentation instability, anomalous absorption

Optical properties of metamaterials such as periodic/quasi-periodic hole arrays in metals, semiconductors, graphite, and superconductors

Raman spectroscopy, Energy dispersive X-ray spectroscopy of thin films at optical frequencies etc.

Terahertz metamaterials: Broadband devices, toroidal excitations, meta-waveguides

Optical communication devices in C-band: Modulators, switches, dichroic mirrors and narrow band pass filters

On-going Research Project

Dynamically tunable resonance behaviour in terahertz metamaterials using 2-D materials
Project Duration: 2021-2024
Funding agency: SERB

Plasmonic metamaterials based optical components for application in space
Project Duration: 2021-2024
Funding agency: ISRO

Metamaterials based compact broadband tunable modulator for terahertz photonics
Project Duration: 2021-2024
Funding agency: MEITY

Exploring tunable electromagnetic induced transparency effect using exotic materials in terahertz metamaterials
Project Duration: 2022-2025
Funding agency: SERB

DST Fast Track Young Scientist (2015-18)
Plasmonic metamaterials based terahertz guided wave devices
Funding agency: SERB

Young Scientist Research Award (2015-18)
Terahertz active and passive waveguide components using engineered plasmonic metamaterials on semiconductor surfaces.
Funding agency: BRNS

Experimental Facilities

Femtosecond Laser

passively mode-locked fiber laser that utilizes a saturable absorber to deliver excellent stability and reliability, with turnkey operation.

Terahertz Generator

It monitors and controls all aspects of THz generation and detection. It delivers precisely controlled optical signals to the terahertz transmitters and receivers, or the T-Gauge® Sensor Heads, enabling them to generate and receive terahertz signals.

Exfo LTB-1 Laser

wavelength: 1530-1565 nm

Spin Coating System

ELMO Laser

fiber-based femtosecond laser sources

Terahertz Optics and Meta-Photonics Lab