Search Results - "Punjal, Ajinkya"
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1
Fourier Transformed Terahertz Spectroscopy Inspired Detection of Evanescent Orders in All Dielectric Sub-Wavelength Grating
Published in IEEE journal of selected topics in quantum electronics (01-09-2023)“…Although evanescent orders offer interesting physics, the experimental detection of these modes are very challenging task because of their inherent…”
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2
Surface plasmon-enhanced photo-driven CO2 hydrogenation by hydroxy-terminated nickel nitride nanosheets
Published in Nature communications (03-05-2023)“…The majority of visible light-active plasmonic catalysts are often limited to Au, Ag, Cu, Al, etc., which have considerations in terms of costs, accessibility,…”
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3
Polarization-independent tunable terahertz slow light with electromagnetically induced transparency metasurface
Published in New journal of physics (01-09-2022)“…Tunable slow light systems have gained much interests recently due to their efficient control of strong light–matter interactions as well as their huge…”
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4
Ultrafast Carrier Relaxation and Second Harmonic Generation in a Higher‐Fold Weyl Fermionic System PtAl
Published in Advanced Physics Research (01-01-2024)“…In topological materials, shielding of bulk and surface states by crystalline symmetries has provided hitherto unknown access to electronic states in condensed…”
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5
Evolutionary Algorithm based design approach for Metamaterials in Terahertz Regime
Published in 2022 Workshop on Recent Advances in Photonics (WRAP) (04-03-2022)“…We numerically and experimentally examine the polarization-insensitive bandpass metamaterial designs generated using a Genetic Algorithm (GA). We discuss about…”
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Conference Proceeding -
6
Study of resonant Evanescent Orders in All Dielectric metagrating in Terahertz domain
Published in 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz) (28-08-2022)“…The gratings operating at subwavelength region can excite and modulate the non-propagating resonant evanescent orders. Here, we demonstrate the excitation of…”
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Conference Proceeding -
7
Semi-insulating β-Ga2O3 single crystals through vanadium doping: Growth, Optical and Terahertz characterization
Published in Journal of crystal growth (01-07-2024)“…We report the growth of electrically resistive, high quality vanadium-doped β-Gallium Oxide (β-Ga2O3) single crystals via the optical floating zone growth…”
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8
Design, optimization, and characterization of deep sub-wavelength evanescent orders in terahertz metagratings
Published in Optics continuum (15-09-2023)“…Resonant evanescent orders, being an exclusive deep sub-wavelength phenomenon, are well-known for confining strong EM energy at the air-grating interface when…”
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9
Experimental and Computational studies on Intramolecular charge transfer, Terahertz and Two photon absorption of 3-[(4-Nitrophenyl Azo)]-9H-Carbazole-9-Ethanol (NPACE) from their Vibrational spectra for Optical limiting and NLO applications
Published in Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy (15-12-2023)“…[Display omitted] •Vibrational spectral investigation has been carried out on 3-[(4-Nitrophenyl Azo)]-9H-Carbazole-9-Ethanol (NPACE) with the aid of…”
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10
Terahertz optical properties and birefringence in single crystal vanadium doped (100) β-Ga2O3
Published in Optical materials express (01-07-2022)“…We report the terahertz optical properties of vanadium doped (100) β-Ga2O3 using terahertz time-domain spectroscopy (THz-TDS). The V-doped β-Ga2O3 crystal…”
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11
Terahertz optical properties and birefringence in single crystal vanadium doped (100) β-Ga 2 O 3
Published in Optical materials express (01-07-2022)“…We report the terahertz optical properties of vanadium doped (100) β-Ga 2 O 3 using terahertz time-domain spectroscopy (THz-TDS). The V-doped β-Ga 2 O 3…”
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12
Surface plasmon-enhanced photo-driven CO 2 hydrogenation by hydroxy-terminated nickel nitride nanosheets
Published in Nature communications (03-05-2023)“…The majority of visible light-active plasmonic catalysts are often limited to Au, Ag, Cu, Al, etc., which have considerations in terms of costs, accessibility,…”
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Journal Article -
13
Metamaterial Design Using Distributed Neural Network (DiNN) Approach
Published in 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz) (28-08-2022)“…We propose a novel Distributed Neural Network (DiNN) approach for the design of Metamaterial which doesn't require a high computational facility, with a faster…”
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Conference Proceeding -
14
Study of the Origin of Quasi-Bound States in the Continuum
Published in 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz) (28-08-2022)“…In this paper we simulate and experimentally verify the quasi Bound States in the Continuum in the far field Terahertz Domain. We also show the origin of the…”
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Conference Proceeding -
15
Terahertz Birefringence and Dichroism in (100) and (111) NdGaO3
Published in 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz) (28-08-2022)“…We report Terahertz (THz) birefringence and THz dichroism from 0.5THz to 2.5THz in commercial 500 \mu \mathrm{m} thick (100) NdGaO 3 and (111) NdGaO 3 by…”
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Conference Proceeding -
16
Exploring angle-dependent Phonon Modes in Sodium Mesitylene Sulfonate (SMS) crystals using THz-time domain polarimetry (THz-TDP)
Published 19-09-2024“…We employed sodium mesitylene sulfonate crystals to investigate angle-dependent phonon resonance and thickness-dependent splitting in THz time-domain…”
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17
Exploring Angle dependent Phonon Modes in Sodium Mesitylene Sulfonate(SMS) Crystal using Terahertz time-domain Polarimetry(THZ-TDP)
Published in 2024 49th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) (01-09-2024)“…We employed sodium mesitylene sulfonate crystal to investigate angle-dependent phonon resonance in THz time-domain polarimetry. This crystal possesses a C2…”
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Conference Proceeding -
18
Near-Field Imaging of a TeraHertz deep-subwavelength Metasurface
Published in 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz) (28-08-2022)“…In this paper, we present a study on the near-field distribution on a metasurface consisting of deep-subwavelength rectangular apertures. The metasurface is…”
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Conference Proceeding -
19
Virus Detection using Metagrating in Terahertz Regime
Published in 2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz) (29-08-2021)“…Due to the pandemic situation worldwide, there's a need to develop rapid and sensitive diagnosis method for detecting different viruses. In this paper using…”
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Conference Proceeding -
20
Terahertz birefringence and dichroism in Fe Doped β-Ga2O3
Published in 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz) (28-08-2022)“…To the best of our knowledge, we report the first experimental study, which shows Terahertz (THz) birefringence and dichroism in the range of 0.2 THz to 2.5…”
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Conference Proceeding