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Calculation of the bandwidth of a graded-index optical fiber using experimentally measured quantities
(© 2007 Dhaka University Journal of Science, 2007-01)
Computer simulation of Fresnel diffraction from rectangular apertures and obstacles using the Fresnel integrals approach
(© 2005 Elsevier Ltd., 2007-03)
In this paper, we describe a new computer simulation technique of generating Fresnel diffraction images from rectangular apertures of arbitrary dimensions by using Fresnel integrals instead of the more common fast Fourier ...
Detection of trace amount of arsenic in groundwater by laser-induced breakdown spectroscopy and adsorption
(© 2014 Optics and Laser Technology, 2014)
LIBS technique coupled with adsorption has been applied for the efficient detection of arsenic in liquid. Several adsorbents like tea leaves, bamboo slice, charcoal and zinc oxide have been used to enable sensitive detection ...
Laser Raman spectroscopy with different excitation sources and extension to surface enhanced raman spectroscopy
(© 2015 Hindawi Publishing Corporation, 2015)
A dispersive Raman spectrometer was used with three different excitation sources (Argon-ion, He-Ne, and Diode lasers operating at 514.5 nm, 633 nm, and 782 nm, resp.). The system was employed to a variety of Raman active ...
Generating near-field fresnel diffraction patterns by iterative fresnel integrals method: a computer simulation approach
(© 2012 Nova Science Publishers, Inc., 2012-12)
Recently the concept of computer-based virtual experiments in all branches of physics has generated wide spread interests among the researchers. In this Chapter, we describe the Iterative Fresnel Integrals Method (IFIM), ...
Elemental analyses and determination of lead content in kohl (stone) by laser-induced breakdown spectroscopy
(© 2012 Society for Applied Spectroscopy, 2012-04)
Elemental analyses of kohl (stone) samples collected from three different parts of the world were performed using laser-induced breakdown spectroscopy (LIBS). The analyses indicated that lead (Pb), copper (Cu), silver (Ag), ...
Power dependence of size of laser ablated colloidal silver nanoparticles
(© 2010 EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg, 2010-11)
Silver nanoparticles have been produced by laser ablation of silver metal in nanopure water without any chemical additives. It has been observed that laser power has a control over the size of the nanoparticles. Increasing ...
Elemental profiling and determination of Ti content of the beach sand samples of Bangladesh using LIBS technique
(© 2010 Elsevier Ltd., 2010-09)
Laser-induced breakdown spectroscopic technique was used to study the elemental profile of beach sand samples of Bangladesh. Apart from Silicon, which is the main elemental constituent of sand, the presence of Li, Na, Mg, ...
Fabrication of gold nanoparticles in water by laser ablation technique and their characterization
(© 2011 Springer-Verlag., 2011-11)
A colloidal solution of gold nanoparticles in deionized nanopure water was produced by laser ablation technique without the use of any chemical/surfactant. Spectral characterization and morphological studies of these ...