Prasanta Kumar Datta
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View article: Three-Photon Saturable Absorption in Atomically Thin Phlogopite
Three-Photon Saturable Absorption in Atomically Thin Phlogopite Open
Two-dimensional (2D) materials, due to their remarkable physical and chemical properties, hold significant potential for future optical and electrical applications. In this study, the synthesis of 2D phlogopite (magnesium-rich mica) via li…
View article: A novel insight into the femtosecond induced nonlinear response of monoamine neurotransmitters through experimental and in silico approaches
A novel insight into the femtosecond induced nonlinear response of monoamine neurotransmitters through experimental and in silico approaches Open
Monoamine neurotransmitters, such as serotonin and melatonin, are of significant scientific interest due to their widespread influence across various tissues. They play crucial roles in the hormonal and neuronal systems, controlling numero…
View article: Mitigation of Stimulated Raman Amplification Artifact in Transient Absorption Spectroscopy
Mitigation of Stimulated Raman Amplification Artifact in Transient Absorption Spectroscopy Open
Artifacts due to nonlinear optical processes like "Cross Phase Modulation (XPM)", "Stimulated Raman Amplification (SRA)", and "Two-Photon Absorption (TPA)" etc., have a detrimental effect on Transient Absorption Spectroscopy (TAS). In this…
View article: Growth of High-Density Zinc Oxide (Zno) Nanoflowers in All Aqueous Two-Step Method and Their Application in Second Harmonic Generation of Femtosecond Laser
Growth of High-Density Zinc Oxide (Zno) Nanoflowers in All Aqueous Two-Step Method and Their Application in Second Harmonic Generation of Femtosecond Laser Open
View article: Vibrational Spectra of Serotonin by Terahertz Time Domain Spectroscopy and Dft Simulations
Vibrational Spectra of Serotonin by Terahertz Time Domain Spectroscopy and Dft Simulations Open
View article: Comprehensive excited state carrier dynamics of 2D selenium: One-photon and multi-photon absorption regimes
Comprehensive excited state carrier dynamics of 2D selenium: One-photon and multi-photon absorption regimes Open
Semiconductors play a critical role in optoelectronic applications, and recent research has identified group-VI 2D semiconductors as promising materials for this purpose. Here, we report the comprehensive excited state carrier dynamics of …
View article: Observing ice structure of micron-sized vapor-deposited ice with an x-ray free-electron laser
Observing ice structure of micron-sized vapor-deposited ice with an x-ray free-electron laser Open
The direct observation of the structure of micrometer-sized vapor-deposited ice is performed at Pohang Accelerator Laboratory x-ray free electron laser (PAL-XFEL). The formation of micrometer-sized ice crystals and their structure is impor…
View article: Negative Shrinkage of Thin-walled Investment Brass Castings
Negative Shrinkage of Thin-walled Investment Brass Castings Open
View article: Second Harmonic Generation of Femtosecond Laser Pulses of Central Wavelength 1000 nm, 1100 nm and 1300 nm Using ZnO Nanorods
Second Harmonic Generation of Femtosecond Laser Pulses of Central Wavelength 1000 nm, 1100 nm and 1300 nm Using ZnO Nanorods Open
In this work high density ZnO nanorods were grown on glass substrate by using a two steps method. In the first step drop-casting method was used for growth of seed layer by taking Zinc Acetate Dihydrate as precursor. In the second step, Zn…
View article: Observation of dynamic screening in the excited exciton states in multilayered <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>MoS</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>
Observation of dynamic screening in the excited exciton states in multilayered Open
Excitonic resonance and binding energies can be altered by controlling the environmental screening of the attractive Coulomb potential. Although this screening response is often assumed to be static, the time evolution of the excitonic qua…
View article: Forging Technology of High-Tin Bronzes in Ancient Bengal
Forging Technology of High-Tin Bronzes in Ancient Bengal Open
View article: CCDC 1952174: Experimental Crystal Structure Determination
CCDC 1952174: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 1952173: Experimental Crystal Structure Determination
CCDC 1952173: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Observation of spectral narrowing and mode conversion in two-dimensional binary magnonic crystal
Observation of spectral narrowing and mode conversion in two-dimensional binary magnonic crystal Open
View article: Electrical transport properties and ultrafast optical nonlinearity of rGO–metal chalcogenide ensembles
Electrical transport properties and ultrafast optical nonlinearity of rGO–metal chalcogenide ensembles Open
Photosensitive hybrid composites (rGO–ZnSe and rGO–ZnTe) have been synthesized by a solvothermal method. Comparative study on change in mobility (dark to illumination), photosensitivity and nonlinear optical properties indicate that rGO–Zn…
View article: Real-time observation of spin-resolved plexcitons between metal plasmons\n and excitons of WS$_2$
Real-time observation of spin-resolved plexcitons between metal plasmons\n and excitons of WS$_2$ Open
Strong light-matter interactions between resonantly coupled metal plasmons and spin decoupled bright excitons from two dimensional (2D) transition metal dichalcogenides (TMDs) can produce discrete spin-resolved exciton-plasmon polariton (p…
View article: Effects of the removal of Ta capping layer on the magnetization dynamics of Permalloy thin films
Effects of the removal of Ta capping layer on the magnetization dynamics of Permalloy thin films Open
We have investigated the spin wave dynamics of Permalloy (Py) thin films with and without a Ta capping layer for varying Py thickness (15 nm, 20 nm and 30 nm) using all optical time-resolved magneto-optical Kerr effect measurements. XPS me…
View article: All-inorganic quantum dot assisted enhanced charge extraction across the interfaces of bulk organo-halide perovskites for efficient and stable pin-hole free perovskite solar cells
All-inorganic quantum dot assisted enhanced charge extraction across the interfaces of bulk organo-halide perovskites for efficient and stable pin-hole free perovskite solar cells Open
Grain boundaries in bulk perovskite films are considered as giant trapping sites for photo-generated carriers. Surface engineering via inorganic perovskite quantum dots has been employed for creating monolithically grained, pin-hole free p…
View article: Real-time observation of spin-resolved plexcitons between metal plasmons and excitons of WS 2
Real-time observation of spin-resolved plexcitons between metal plasmons and excitons of WS 2 Open
Strong light-matter interactions between resonantly coupled metal plasmons and spin decoupled bright excitons from two dimensional (2D) transition metal dichalcogenides (TMDs) can produce discrete spin-resolved exciton-plasmon polariton (p…
View article: Ultrafast time-resolved investigations of excitons and biexcitons at room temperature in layered WS <sub>2</sub>
Ultrafast time-resolved investigations of excitons and biexcitons at room temperature in layered WS <sub>2</sub> Open
Strong light-matter interactions in layered transition metal dichalcogenides\n(TMDs) open up vivid possibilities for novel exciton-based devices. The optical\nproperties of TMDs are dominated mostly by the tightly bound excitons and more\n…
View article: One- and Two-Photon Uncaging: Carbazole Fused <i>o</i>-Hydroxycinnamate Platform for Dual Release of Alcohols (Same or Different) with Real-Time Monitoring
One- and Two-Photon Uncaging: Carbazole Fused <i>o</i>-Hydroxycinnamate Platform for Dual Release of Alcohols (Same or Different) with Real-Time Monitoring Open
A one- and two-photon activated photoremovable protecting group (PRPG) was designed based on a carbazole fused o-hydroxycinnamate platform for the dual (same or different) release of alcohols. The mechanism for the dual release proceeds th…
View article: Anomalous Dynamics in <i>tert</i>-Butyl Alcohol–Water and Trimethylamine <i>N</i>-Oxide–Water Binary Mixtures: A Femtosecond Transient Absorption Study
Anomalous Dynamics in <i>tert</i>-Butyl Alcohol–Water and Trimethylamine <i>N</i>-Oxide–Water Binary Mixtures: A Femtosecond Transient Absorption Study Open
In this article, we have investigated the unusual dynamics of tert-butyl alcohol (TBA)-water and trimethylamine N-oxide (TMAO)-water binary mixtures using solvation dynamics as a tool. For this purpose, femtosecond transient …
View article: All optical detection of picosecond spin-wave dynamics in 2D annular antidot lattice
All optical detection of picosecond spin-wave dynamics in 2D annular antidot lattice Open
Novel magnetic structures with precisely controlled dimensions and shapes at\nthe nanoscale have potential applications in spin logic, spintronics and other\nspin-based communication devices. We report the fabrication of two-dimensional\nb…
View article: Broadband pump-probe study of biexcitons in chemically exfoliated layered WS$_{2}$
Broadband pump-probe study of biexcitons in chemically exfoliated layered WS$_{2}$ Open
Strong light-matter interactions in layered transition metal dichalcogenides (TMDs) open up vivid possibilities for novel exciton-based devices. The optical properties of TMDs are dominated mostly by the tightly bound excitons and more com…
View article: A broadband time resolved investigation of excitons and biexcitons in layered WS$_{2}$ dispersion
A broadband time resolved investigation of excitons and biexcitons in layered WS$_{2}$ dispersion Open
Strong light-matter interactions in layered transition metal dichalcogenides (TMDs) open up vivid possibilities for novel exciton-based devices. The optical properties of TMDs are dominated mostly by the tightly bound excitons and more com…
View article: Dynamic gain aperture modelocking in picosecond regime based on cascaded second-order nonlinearity
Dynamic gain aperture modelocking in picosecond regime based on cascaded second-order nonlinearity Open
The operation of a cascaded second-order mode-locked Nd:YVO4 laser has been investigated considering it as a soft-aperture Kerr lens type and using complex beam parameters. A self consistent complex beam propagation method is us…