A5103226706- Random lasers and scattering media
- Photonic Crystals and Applications
- Orbital Angular Momentum in Optics
- Advanced Optical Imaging Technologies
- Advanced Fiber Laser Technologies
- Optical and Acousto-Optic Technologies
- Luminescence and Fluorescent Materials
- Nonlinear Optical Materials Research
- Advanced Optical Sensing Technologies
- Magnesium Oxide Properties and Applications
- Optical Network Technologies
- Photonic and Optical Devices
- Laser-Ablation Synthesis of Nanoparticles
- Nanoparticles: synthesis and applications
- Advanced Photonic Communication Systems
- Surface Roughness and Optical Measurements
- 2D Materials and Applications
- Neural dynamics and brain function
- Photorefractive and Nonlinear Optics
National Institute of Technology Durgapur
2021-2025
Vellore Institute of Technology University
2023
Plasmonic random lasers have drawn significant attention recently due to their versatility, low threshold, and the possibility of achieving tunable coherent/incoherent outputs. However, in this Letter, phenomenon replica symmetry breaking is reported intensity fluctuations a rarely used colloidal plasmonic laser (RL) illumination. Triangular nanosilver scatter particles produced incoherent RL action when dimethylformamide (DMF) environment Rhodamine-6G gain medium. The use gold-coated...
The liquid-phase exfoliation (LPE) technique has been employed to prepare two-dimensional (2D) gallium telluride (Ga2Te3) nanosheets with an average thickness of ∼2.4 nm and linear optical properties, including UV–visible absorption photoluminescence (PL) emission characteristics the sample in green wavelength region are reported. third-order nonlinear (NLO) responses colloidal suspension 2D Ga2Te3 determined at 532 632 wavelengths by a spatial self-phase modulation (SSPM) experiment. value...
The random laser (RL) is now becoming an essential tool for various photonics applications, and a plethora of research advancements in RL coupled with developments the field techniques syntheses nanostructured materials taking place. But realization tuning peak emission wavelength still very challenging. However, this report we have demonstrated shifted tunable low threshold incoherent visible region gain medium commercially available dye material by employing rarely used scatterer...
This report dominantly focused on employment of natural micro-pillars, embedded the surface bambusa tulda leaves, as scattering centres for achieving a single mode random laser (RL) at ∼582 nm with lower line width (∼1.8 nm) and lasing threshold (132 W/cm 2 ) in Rhodamine-B dye gain medium. The stability performances is checked over months duration activities micro-pillars are confirmed via numerical simulation using COMSOL power Fourier transform (PFT) analyses. demonstration speckle-free...
This is the first report on biogenic synthesis of silver and copper-doped zinc oxide nanoflowers using Leucophyllum frutescens leaf extract for environmental biomedical applications.
The minimization of photon loss is one the significant challenges in designing efficient random lasers (RLs). Herein, demonstration a 4‐(dicyanomethylene)‐2‐methyl‐6‐(4‐dimethylaminostyryl)‐4H‐pyran (DCM) dye‐based RL made by employment an innovative adaptive feedback mechanism through use fundamental phenomenon total internal reflection light microbubbles, generated photothermally presence graphene flakes (GFs). Interestingly, here, GFs have acted simultaneously as passive scatterer and...