Department of Physics · IIT Ropar

Engineering light at the nanoscale with metasurfaces and plasmonics.

The Photonics & Meta-Optics Laboratory designs flat optics, dielectric-loaded plasmonic waveguides, and meta-optical imaging systems — from the telecom band to the mid-infrared.

Actively recruiting a JRF for a broadband-metasurface thermal-imaging project. See openings →
What we do

Major Research Areas

Four interlocking directions, unified by the control of light below the diffraction limit.

Metasurfaces & Meta-Optics

Subwavelength-structured surfaces for wavefront shaping, flat lenses, and tunable optical components at telecom and mid-IR wavelengths.

Plasmonics & DLSPP Waveguides

Dielectric-loaded surface plasmon polariton platforms, including thermally invariant Bragg reflectors for robust on-chip routing.

Optical Imaging & Microscopy

Novel imaging modalities and meta-optical components that push resolution, contrast, and spectral reach in compact systems.

Thermal & SWIR Photonics

Broadband metasurfaces and spectroscopy for short-wave-infrared and thermal imaging across temperature.

From the lab

News & Updates

Recent grants, papers, and milestones.

2026
PaperOur work on a thermally invariant DLSPP Bragg reflector is accepted in [JOURNAL NAME].
2026
PaperNew paper in ACS Applied Optical Materials: “High-Index Dielectric Metasurfaces: Unlocking Frontiers in Mid-Infrared Photonics.”
2026
PositionOpen JRF position on broadband metasurfaces for thermal imaging (ANRF PMECRG). Apply →
2025
GrantAwarded the ANRF-PAIR (Consortium) Grant, 2025 for collaborative research in advanced photonics.
Output

Selected Publications

2026
Thermally Invariant DLSPP Bragg Reflector Using Hybrid Si₃N₄/TiO₂ Layers
Accepted, [Advanced Photonics Research] (2026). λ = 1543 nm; spectral drift < 0.15% across 100–800 K.
2026
High-Index Dielectric Metasurfaces: Unlocking Frontiers in Mid-Infrared Photonics
ACS Applied Optical Materials.
View all publications →
Get in touch

Connect with the lab

Collaborations, student inquiries, and visits are welcome.