Kavita Devi
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View article: Multi-GHz repetition rate, tunable ultrafast mid-infrared source
Multi-GHz repetition rate, tunable ultrafast mid-infrared source Open
High repetition rate ultrafast optical radiation across the electromagnetic spectrum is of paramount interest due to a variety of applications. Typically, the repetition rate of an oscillator is determined by the round-trip optical length …
View article: Multi-GHz repetition rate, tunable ultrafast mid-infrared source
Multi-GHz repetition rate, tunable ultrafast mid-infrared source Open
High repetition rate ultrafast optical radiation across the electromagnetic spectrum is of paramount interest due to a variety of applications. Typically, the repetition rate of an oscillator is determined by the round-trip optical length …
View article: Non-interferometric measurement of geometric phase through stimulated second harmonic generation
Non-interferometric measurement of geometric phase through stimulated second harmonic generation Open
The geometric phase (GP), arising from the evolution of states like polarization on the Poincaré sphere, is conventionally measured using interferometry. However, the interferometric techniques often suffer from instability, causing GP to …
View article: Non-interferometric measurement of geometric phase through stimulated second harmonic generation
Non-interferometric measurement of geometric phase through stimulated second harmonic generation Open
The geometric phase (GP), arising from the evolution of states like polarization on the Poincaré sphere, is conventionally measured using interferometry. However, the interferometric techniques often suffer from instability, causing GP to …
View article: Designing of tragacanth gum-poly(2-(methacryloyloxy) ethyl] dimethyl-(3-sulfopropyl) ammonium hydroxide) and poly(acrylamide) based hydrogels for drug delivery and wound dressing applications
Designing of tragacanth gum-poly(2-(methacryloyloxy) ethyl] dimethyl-(3-sulfopropyl) ammonium hydroxide) and poly(acrylamide) based hydrogels for drug delivery and wound dressing applications Open
Bioactive tragacanth gum (TG) was functionalized by covalent crosslinking of poly[2-(methacryloyloxy) ethyl] dimethyl-(3-sulfopropyl) ammonium hydroxide (PMEDSAH) to design network structure in form of hydrogel wound dressings (HWD). These…
View article: Exploring bioactive tragacanth gum for developing nerve regenerating agent imprinted hydrogels for brain drug delivery
Exploring bioactive tragacanth gum for developing nerve regenerating agent imprinted hydrogels for brain drug delivery Open
Brain injury is almost irreparable due to poor regenerative capability of neural tissue and drug delivery (DD) to brain is a unique challenge. Herein, bioactive tragacanth gum (TG) polysaccharide has been explored for developing hydrogel w…
View article: Developing 3D-network gels from polysaccharide gums for biomedical applications
Developing 3D-network gels from polysaccharide gums for biomedical applications Open
Keeping in view the recent advancements in polysaccharide materials, gum acacia (GA) - tragacanth gum (TG) was investigated for designing polymeric network structures impregnated with cephalexin antibiotics for drug delivery (DD). Grafted …
View article: Pristine coconut husk biowaste and 2-ethylhexyl acrylate/methyl acrylate-based novel oleophilic gels for oil spill cleanup
Pristine coconut husk biowaste and 2-ethylhexyl acrylate/methyl acrylate-based novel oleophilic gels for oil spill cleanup Open
Novel oleophilic gels synthesized with pristine coconut husk and acrylate monomers.
View article: Design of dietary fiber psyllium-sterculia gum based hydrogels for use in controlled drug delivery applications
Design of dietary fiber psyllium-sterculia gum based hydrogels for use in controlled drug delivery applications Open
The dietary fibers psyllium-sterculia gum have therapeutic roles in diarrhea, therefore, herein this work, hydrogels were prepared for use as drug delivery devices (DDD) for ornidazole. Grafted copolymers were characterized with SEM, FTIR,…
View article: Widely tunable room-temperature continuous-wave optical parametric oscillator based on periodically-poled KTiOPO<sub>4</sub>
Widely tunable room-temperature continuous-wave optical parametric oscillator based on periodically-poled KTiOPO<sub>4</sub> Open
We report the first realization of widely tunable continuous-wave (cw) optical parametric oscillator (OPO) based on periodically-poled KTiOPO4 (PPKTP) at room temperature. By exploiting fan-out grating design in a 30-mm PPKTP crystal, and …
View article: Picosecond difference-frequency-generation in orientation-patterned gallium phosphide
Picosecond difference-frequency-generation in orientation-patterned gallium phosphide Open
We report the generation of tunable high-repetition-rate picosecond radiation in the mid-infrared using the new quasi-phase-matched nonlinear material of orientation-patterned gallium phosphide (OP-GaP). The source is realized by single-pa…
View article: Fiber-laser-based, high-repetition-rate, picosecond ultraviolet source tunable across 329–348 nm
Fiber-laser-based, high-repetition-rate, picosecond ultraviolet source tunable across 329–348 nm Open
We report a compact, fiber-laser-based, high-repetition-rate picosecond source for the ultraviolet (UV), providing multi-tens of milliwatt of average power across 329-348 nm. The source is based on internal sum-frequency-generation (SFG) i…
View article: Ultrafast optical vortex beam generation in the ultraviolet
Ultrafast optical vortex beam generation in the ultraviolet Open
We report on the generation of ultrafast vortex beams in the deep ultraviolet (DUV) wavelength range at 266 nm, for the first time to our knowledge. Using a Yb-fiber-based green source in combination with two spiral phase plates of orders …
View article: Continuous-wave, single-pass, single-frequency second-harmonic-generation at 266 nm based on birefringent-multicrystal scheme
Continuous-wave, single-pass, single-frequency second-harmonic-generation at 266 nm based on birefringent-multicrystal scheme Open
We report the implementation of a compact cascaded multicrystal scheme based on birefringent crystals in critical phase-matching, for the generation of continuous-wave (cw) radiation in the deep ultraviolet (UV). The approach comprises a c…
View article: Ti:sapphire-pumped deep-infrared femtosecond optical parametric oscillator based on CdSiP_2
Ti:sapphire-pumped deep-infrared femtosecond optical parametric oscillator based on CdSiP_2 Open
We report on a femtosecond optical parametric oscillator (OPO) for the deep-infrared (deep-IR) based on the Kerr-lens-mode-locked Ti:sapphire laser as the pump source. By deploying a novel cascaded intracavity arrangement, comprising a fem…
View article: Yb-fiber-laser-based, 18 W average power, picosecond ultraviolet source at 266 nm
Yb-fiber-laser-based, 18 W average power, picosecond ultraviolet source at 266 nm Open
We report a compact, stable, high-power, picosecond ultraviolet (UV) source at 266 nm based on simple single-pass two-step fourth-harmonic generation (FHG) of a mode-locked Yb-fiber laser at 79.5 MHz in LiB3O5 (LBO) and β-BaB2O4. Using a 3…
View article: Phase-Modulation-Mode-Locked Continuous-Wave MgO:PPLN Optical Parametric Oscillator
Phase-Modulation-Mode-Locked Continuous-Wave MgO:PPLN Optical Parametric Oscillator Open
We report phase-modulation mode-locking of a continuous-wave (cw) singly-resonant optical parametric oscillator (OPO) in the near- and mid-infrared based on MgO-doped periodically poled LiNbO3 (MgO:PPLN) and pumped by an Yb-fiber laser at …