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Detection of multiple elements in coal samples from Bangladesh by laser-induced breakdown spectroscopy
(© 2011 Elsevier Ltd., 2011-11)
Laser-induced breakdown spectroscopy (LIBS) was used to analyze the coal samples from the Barapukuria coal mine of Bangladesh and coal from eastern India. Besides the major elements carbon and silicon, a number of minor ...
Construction of laser raman system using diode laser and Its performance
(© 2009 Journal of Bangladesh Academy of Sciences, 2009)
We constructed a laser Raman system using a commercially available infrared diode laser. The diode laser is used without any temperature controller in a stabilized power supply. Good quality Raman spectra of sufficient ...
Calculation of the bandwidth of a graded-index optical fiber using experimentally measured quantities
(© 2007 Dhaka University Journal of Science, 2007-01)
Laser-induced breakdown spectroscopy and its applications in mineral and pollution analyses
(© 2012 Nova Science Publishers, 2012-09)
Semiquantitative determination of chromium content of river bed soil of Buriganga river at different locations
(© 2010 Journal of Bangladesh Academy of Sciences, 2010)
Using the technique of Laser Induced Breakdown Spectroscopy, the chromium content of river bed sediment of the Buriganga River is determined at various locations. Hazardous element, chromium is found in addition to other ...
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 ...
An experimental demonstration of quantum NOT gate: transition from classical to quantum regime
(© 2010 IEEE, 2010)
Path of a photon was considered to be used as qubit for implementing quantum NOT gate. An experimental setup was designed using a Mach-Zehnder interferometer constructed from simple optical devices such as He-Ne lasers, ...
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 ...
Radiative lifetime measurement of excited neutral nitrogen atoms by time resolved laser-induced breakdown spectroscopy
(© 2014 Royal Society of Chemistry, 2014-08)
Lifetimes of the excited 2P2 (3P) 3p 4S3/2 level of a nitrogen atom corresponding to transitions to different lower states have been estimated by measuring the line intensity of a transition as a function of the delay time ...