Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Yogesh Godwal"'
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 63:525-535
A quantitative comparison of the performance of four different laser-induced breakdown spectroscopy detection systems is presented. The systems studied are an intensified photodiode array coupled with a Czerny–Turner spectrometer, an intensified CC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::251c13e6ef135ab1b13502f741214ae2
https://doi.org/10.1016/j.sab.2008.01.004
https://doi.org/10.1016/j.sab.2008.01.004
Publikováno v:
Laser and Particle Beams. 26:95-104
Laser induced breakdown spectroscopy is a fast non-contact technique for the analysis of the elemental composition of any sample. Our focus is to advance this technique into a regime where we use pulse energies below 100 µJ. This regime is referred
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a61448c0805cd0562e07afcdbab22699
https://doi.org/10.1017/s0263034608000128
https://doi.org/10.1017/s0263034608000128
Detection of Lead in Water Using Laser-Induced Breakdown Spectroscopy and Laser-Induced Fluorescence
Publikováno v:
Analytical Chemistry. 80:1995-2000
Laser-induced breakdown spectroscopy (LIBS) is a well-known technique for fast, stand-off, and nondestructive analysis of the elemental composition of a sample. We have been investigating micro-LIBS for the past few years and demonstrating its applic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa2c0a73eb0abb65d90fda4760186a96
https://doi.org/10.1021/ac071573y
https://doi.org/10.1021/ac071573y
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 62:1443-1447
The detection sensitivity of laser-induced breakdown spectroscopy (LIBS) is improved by coupling it with a laser-induced fluorescence method. A waterjet sample containing 500 ppm of Pb as an analyte was ablated by a 266 nm, frequency-quadrupled Q-swi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f86a9cad8c00dc77dd6148da023f9ad
https://doi.org/10.1016/j.sab.2007.10.044
https://doi.org/10.1016/j.sab.2007.10.044
Autor:
Robert Fedosejevs, Lei Pan, Yogesh Godwal, Janaka C. Ranasinghesagara, Wei Shi, Shaun Kerr, Ilya Utkin, Roger J. Zemp
Publikováno v:
Journal of biomedical optics. 15(5)
Optical-resolution photoacoustic microscopy (OR-PAM) is a novel imaging technology for visualizing optically absorbing superficial structures in vivo with lateral spatial resolution determined by optical focusing rather than acoustic detection. Since
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bfadd5e4678d2a04131e092f5d6fd053
https://pubmed.ncbi.nlm.nih.gov/21054111
https://pubmed.ncbi.nlm.nih.gov/21054111
Autor:
Yogesh Godwal, Robert Fedosejevs, Roger J. Zemp, Lei Pan, Ilya Utkin, Shaun Kerr, Janaka C. Ranasinghesagara, Wei Shi
Publikováno v:
Photons Plus Ultrasound: Imaging and Sensing 2010.
Optical-resolution photoacoustic microscopy is a novel imaging technology for visualizing optically-absorbing superficial structures in vivo with lateral spatial resolution determined by optical focusing rather than acoustic detection. Since scanning
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90747b4c51a1f3879bc775dec48e3ab9
https://doi.org/10.1117/12.842533
https://doi.org/10.1117/12.842533
Publikováno v:
Conference on Lasers and Electro-Optics 2010.
We demonstrate a passively Q-switched ytterbium doped fiber laser with Cr4+:YAG and stimulated Brillouin backscattering. Linearly polarized output with ∼ 375 kW peak power and pulse duration as short as 490 ps have been obtained.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::284e9798cdd02dbc2f56001545e724cf
https://doi.org/10.1364/cleo.2010.cmw1
https://doi.org/10.1364/cleo.2010.cmw1
Publikováno v:
Conference on Lasers and Electro-Optics 2010.
A diode pumped Cr,Nd:YAG microchip laser with 4µJ pulse energy and multi-kilohertz repetition rate is demonstrated suitable for high sensitivity Laser-Induced Breakdown Spectroscopy detection of trace heavy metals in water using an electroplating sa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d529894bc299f4e7015622cfe256fc5
https://doi.org/10.1364/cleo_apps.2010.awa3
https://doi.org/10.1364/cleo_apps.2010.awa3
Publikováno v:
Optics Letters. 35:895
A passively Q-switched ytterbium doped fiber laser has been demonstrated with a Cr(4+):yttrium aluminum garnet saturable absorber and distributed stimulated Brillouin scattering. A linearly polarized output with approximately 375 kW peak power and a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::254fe2714174958e6186c0effafd28ea
https://doi.org/10.1364/ol.35.000895
https://doi.org/10.1364/ol.35.000895
Publikováno v:
Applied Optics. 49:C87
Water contaminated with toxic heavy metals can be a great risk to humans. Laser-induced breakdown spectroscopy (LIBS) is a promising candidate to monitor heavy metals in aqueous solutions on site, but the sensitivity is still a major problem. To perf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::885355304ceaf00df9b63aac1945098a
https://doi.org/10.1364/ao.49.000c87
https://doi.org/10.1364/ao.49.000c87