A5062411136- Solar and Space Plasma Dynamics
- Stellar, planetary, and galactic studies
- Solar Radiation and Photovoltaics
- Semiconductor Quantum Structures and Devices
- Cosmology and Gravitation Theories
- Geophysics and Gravity Measurements
- Ionosphere and magnetosphere dynamics
- Black Holes and Theoretical Physics
- Geomagnetism and Paleomagnetism Studies
- Advanced Fiber Laser Technologies
- Complex Systems and Time Series Analysis
- Global Energy and Sustainability Research
- Semiconductor materials and interfaces
- Optical Network Technologies
- Semiconductor materials and devices
- Market Dynamics and Volatility
- Semiconductor Lasers and Optical Devices
- Digital literacy in education
- Advanced Semiconductor Detectors and Materials
- Phase-change materials and chalcogenides
- Relativity and Gravitational Theory
- Photonic and Optical Devices
- Statistical and numerical algorithms
- Chaos control and synchronization
- Currency Recognition and Detection
Jadavpur University
2018-2024
Cardiff Metropolitan University
2023-2024
Binus University
2024
University of Burdwan
2014
Vrije Universiteit Brussel
2014
Photonics (United States)
2012
Centre for Ultrahigh Bandwidth Devices for Optical Systems
2009
Australian National University
2009
Defence Laboratory Jodhpur
2008
ETH Zurich
1998-2002
We present structural and electronic data which indicate that the dominant defects in GaAs grown at low temperatures (LT GaAs) by molecular beam epitaxy (MBE) are As antisites (AsGa) Ga vacancies (VGa), with negligible amounts of interstitials (Asi). show change lattice parameter correlates concentration AsGa, AsGa alone can account for expansion. also total has a characteristic second power dependence on positive charge state material different temperatures. This be understood provided VGa...
Abstract The solar dynamo is essentially a cyclic process in which the toroidal component of magnetic field converted into poloidal one and vice versa. This loop disturbed by some nonlinear stochastic processes mainly operating to part. Hence, memory polar decreases every cycle. On other hand, efficiency and, thus, supercriticality with Sun’s age. Previous studies have shown that increase dynamo. In this study, we employ popular techniques time series analysis, namely, compute Higuchi’s...
We demonstrate wavelength tunability of femtosecond pulses over a range more than 50 nm from diode-pumped Cr:LiSAF laser. The mode-locking mechanism can be explained by soliton mode locking that is started and stabilized broadband semiconductor saturable-absorber mirror designed for low loss the full reflection bandwidth underlying Bragg mirrors, which ultimately limits tunability. obtain 45-fs at 105-mW average output power maximum mode-locked 125 mW with 60-fs pulses.
It is shown with correlated magnetic resonance and electrical measurements that the PIn antisite prevailing defect in InP grown by molecular-beam epitaxy at low temperature. The first ionization level of resonant conduction band, which makes material n-type conducting due to autoionization antisite.
Abstract The Solar Flare Index is regarded as one of the most important solar indices in field solarterrestrial research. It has maximum effect on Earth all other activity and being considered for describing short-lived dynamo action inside Sun. This paper attempts to study short well long-term temporal fluctuations chromosphere region Sun using Index. daily Northern, Southern Hemisphere Total Disk are a period from January 1976 December 2014 (total 14 245 days) chaotic periodic analysis....
We have investigated the optoelectronic and structural properties of GaAs that has been implanted with Ar ions subsequently annealed. The material exhibits all basic optical electronic characteristics typically observed in nonstoichiometric, As or low-temperature-grown GaAs. Annealing at 600 °C produces a highly resistive subpicosecond trapping lifetime for photoexcited carriers. Transmission electron microscopy shows that, instead precipitates, characteristic nonstoichiometeric GaAs, voids...
First Page
The solar dynamo is essentially a cyclic process in which the toroidal component of magnetic field converted into poloidal one and vice versa. This loop disturbed by some nonlinear stochastic processes mainly operating to part. Hence, memory polar decreases every cycle. On other hand, efficiency and, thus, supercriticality with Sun's age. Previous studies have shown that increase dynamo. In this study, we employ popular techniques time series analysis, namely, compute Higuchi's fractal...
<title>Abstract</title> Coronal Hole (CH) being a crucial feature of solar corona bears immense importance in the field Astronomy and Solar Physics because it contributes to Geomagnetic storms through emission Charged particles into interplanetary space, impacting both space weather Earth also impacts lives Space. So detection regions is significant task. Many attempts have already been made this regard. In work we are proposing new method, for automatic CH using deep learning technique,...
ABSTRACT Background Triple wave hair removal is an advanced method for achieving permanent reduction which has always been challenging. This technique combines the benefits of three different wavelengths laser light to target a broader range skin types effectively. study employed equipment. Aims To establish efficacy triple wavelength in various types, sites and type hair. give importance parameter selection techniques be situations achieve removal. Patients Methods was Investigator...
Abstract The daily time series Flare Index (FI) data of Northern Hemisphere, Southern Hemisphere and Total Disk for Solar Cycle 21- 23 24 up to Dec. 2014 has been pre-processed using a 2nd order exponential smoothing algorithm remove orthogonal noise. smoothed in each case is processed scaling analysis Rescaled-Range Analysis as well Finite Variance Scaling Method search the Hurst exponent. As value H obtained from our lies between 0 1, so it can be said that signal may behave like...
The Photonics Explorer is an intra-curricular educational kit developed in a European project with pan-European collaboration of over 35 teachers and science education professors. Unlike conventional outreach kits, the specifically designed to integrate seamlessly school curricula enhance complement teaching learning optics classroom. equips class sets experimental components, provided within supporting didactic framework for lower upper secondary students (12-18 years). completely free...