Electrically tunable optical metasurfaces

F Ding, C Meng, SI Bozhevolnyi - Photonics Insights, 2024 - spiedigitallibrary.org
Optical metasurfaces have emerged as a groundbreaking technology in photonics, offering
unparalleled control over light–matter interactions at the subwavelength scale with ultrathin …

All-dielectric asymmetric planar metasurface based dual-parametric sensor

BK Bhowmik, T Bhowmik, PK Pandey, MS Raju… - Optics …, 2024 - Elsevier
All-dielectric metasurfaces are a rapidly growing area of research because they have lower
ohmic losses and sharper resonances than their metallic equivalents. In this work, we have …

Enhancing signal-to-noise ratio of clinical 1.5 T MRI using metasurface-inspired flexible wraps

J Gupta, P Das, R Bhattacharjee, D Sikdar - Applied Physics A, 2023 - Springer
Magnetic resonance imaging (MRI) is one of the prominent diagnostic tools which uses non-
invasive modalities for clinical imaging of human body parts. Signal-to-noise ratio (SNR), the …

Polarization-and Angle-Insensitive Tunable Metasurface for Electro-Optic Modulation

T Bhowmik, AK Chowdhary… - IEEE Photonics …, 2023 - ieeexplore.ieee.org
Tunable metasurfaces provide enormous degrees-of-freedom for dynamic control of light–
matter interactions at sub-wavelength scales. However, the realization of polarization-and …

Electro-tunable metasurface for tri-state dynamic polarization switching at near-infrared wavelengths

T Bhowmik, J Gupta, D Sikdar - Journal of Physics: Condensed …, 2023 - iopscience.iop.org
Control of polarization states of light is crucial for any photonic system. However,
conventional polarization-controlling elements are typically static and bulky. Metasurfaces …

All-optical high-contrast femtosecond switching using nonlinearity from an epsilon-near-zero effect in plasmonic metamaterials

T Bhowmik, B Chakraborty, D Sikdar - Optics Letters, 2024 - opg.optica.org
Metamaterials opened a new realm to control light–matter interactions at sub-wavelength
scale by engineering meta-atoms. Recently, the integration of several emerging nonlinear …

Metasurface based polarization-insensitive reflection mode band-reject filters for 6G applications

S Das, J Gupta, T Bhowmik… - 2023 IEEE Guwahati …, 2023 - ieeexplore.ieee.org
This paper presents a metasurface based reflection mode band-reject filter for future 6G
applications. The unit cell of the metasurface is a sub-wavelength modified cross-slot …

Epsilon-Near-Zero Material based Dual-Polarization On-Chip Electro-Optic Modulator

T Bhowmik, BK Bhowmik, PK Pandey, G Kumar… - Frontiers in …, 2023 - opg.optica.org
Conference title, upper and lower case, bolded, 18 point type, centered Page 1 Epsilon-Near-Zero
Material based Dual-Polarization OnChip Electro-Optic Modulator Tanmay Bhowmik, *,1 Bhairov …

Complementary-Bowtie-Aperture Inspired Wearable Metasurfaces for boosting SNR in 1.5 T MRI systems

J Gupta, R Bhattacharjee, S Kanagaraj… - 2023 IEEE Guwahati …, 2023 - ieeexplore.ieee.org
Magnetic resonance imaging (MRI) is one of the prominent non-invasive diagnostic tools for
clinical imaging of human body tissues. The performance parameter of MRI ie signal-to …

Tunable Metasurface based Polarization-insensitive Electro-Optic Amplitude Modulator for Nanophotonic Systems

T Bhowmik, J Gupta, B Chakraborty… - 2023 IEEE Guwahati …, 2023 - ieeexplore.ieee.org
Electrooptic modulators are crucial elements in the photonic systems to encode electrical
signal into optical carrier. However, realization of polarization-insensitive optical modulators …