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
NPDF FellowshipCongratulations to Dr. Shailja Sharma on being awarded the SERB National Post-Doctoral Fellowship (NPDF). We are delighted to welcome her to the PMOL Lab.
2026
GrantAwarded the Prime Minister Early Career Research Grant (PMECRG), 2026 for The Design and Development of Flat Optical Elements.
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 →
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Connect with the lab

Collaborations, student inquiries, and visits are welcome.