A Compact Wide-Range Spectrometer with Image Intensifier: Unexpected Advantages, New Functions, and a Variety of Applications

2012 ◽  
Vol 66 (5) ◽  
pp. 496-509 ◽  
Author(s):  
Vladimir Protopopov
Keyword(s):  
Cell Biology ◽  
Optical Gain ◽  
Image Intensifier ◽  
Forensic Analysis ◽  
Time Resolved ◽  
Breakdown Spectroscopy ◽  
Wide Range ◽  
Laser Induced Breakdown ◽  
Volume Production ◽  
And Performance

Gated intensified spectrometers are very efficient instruments not only in time-resolved applications but also in all other fields were traditional non-gated and non-intensified devices are so popular today. This paper describes the design and performance of a simple, reliable, and relatively inexpensive wide-range gated intensified spectrometer that was conceived as a prototype for volume production. With 200–900 nm spectral range, 3 ns temporal resolution, variable optical gain up to 4000, repetition rate up to 200 kHz, spectral resolution 2 nm (0.9 nm with deconvolution), and affordable price, such a device may be useful for budget research laboratories working in the fields of cell biology, laser-induced breakdown spectroscopy, molecular kinetics, plasma diagnostics, materials characterization, combustion analysis, and forensic analysis.

Forensic analysis of hand-written documents using laser-induced breakdown spectroscopy (LIBS) and chemometrics

2021 ◽  
Author(s):  
Felipe Ferri Hilario ◽  
Matheus Lima de Mello ◽  
Edenir Rodrigues Pereira-Filho
Keyword(s):  
Elemental Analysis ◽  
Forensic Analysis ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Minimum Number ◽  
Non Destructive ◽  
Ball Point ◽  
Maximum Differentiation

With the use of Laser Induced Breakdown Spectroscopy (LIBS), fast and semi non-destructive elemental analysis of ball-point pen writings has been performed directly from paper surfaces, aiming to obtain maximum differentiation between pens with a minimum number of pulses.

Determination of Carbon Content in Steel Using Laser-Induced Breakdown Spectroscopy

1992 ◽  
Vol 46 (9) ◽  
pp. 1382-1387 ◽  
Author(s):  
J. A. Aguilera ◽  
C. Aragón ◽  
J. Campos
Keyword(s):  
Carbon Content ◽  
Matrix Effects ◽  
Sample Surface ◽  
Nitrogen Atmosphere ◽  
Laser Induced Breakdown Spectroscopy ◽  
Time Resolved ◽  
Breakdown Spectroscopy ◽  
Use Of Time ◽  
Laser Induced Breakdown

Laser-induced breakdown spectroscopy has been used to determine carbon content in steel. The plasma was formed by focusing a Nd:YAG laser on the sample surface. With the use of time-resolved spectroscopy and generation of the plasma in nitrogen atmosphere, a precision of 1.6% and a detection limit of 65 ppm have been obtained. These values are similar to those of other accurate conventional techniques. Matrix effects for the studied steels are reduced to a small slope difference between the calibration curves for stainless and nonstainless steels.

Time-resolved ultraviolet laser-induced breakdown spectroscopy for organic material analysis

2007 ◽  
Vol 62 (12) ◽  
pp. 1329-1334 ◽  
Author(s):  
Matthieu Baudelet ◽  
Myriam Boueri ◽  
Jin Yu ◽  
Samuel S. Mao ◽  
Vincent Piscitelli ◽  
...  
Keyword(s):  
Organic Material ◽  
Laser Induced Breakdown Spectroscopy ◽  
Time Resolved ◽  
Ultraviolet Laser ◽  
Breakdown Spectroscopy ◽  
Material Analysis ◽  
Laser Induced Breakdown

scholarly journals Effect of sample temperature on time-resolved laser-induced breakdown spectroscopy

AIP Advances ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 065214 ◽  
Author(s):  
Kaimin Guo ◽  
Anmin Chen ◽  
Wanpeng Xu ◽  
Dan Zhang ◽  
Mingxing Jin
Keyword(s):  
Sample Temperature ◽  
Laser Induced Breakdown Spectroscopy ◽  
Time Resolved ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

Evaluation of Femtosecond Laser-Induced Breakdown Spectroscopy for Analysis of Animal Tissues

2008 ◽  
Vol 62 (10) ◽  
pp. 1137-1143 ◽  
Author(s):  
Dário Santos ◽  
Ricardo Elgul Samad ◽  
Lílian Cristina Trevizan ◽  
Anderson Zanardi de Freitas ◽  
Nilson Dias Vieira ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Certified Reference Materials ◽  
Laser System ◽  
Laser Induced Breakdown Spectroscopy ◽  
Animal Tissues ◽  
Time Resolved ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Intensified Charge Coupled Device

The aim of this work was to evaluate the performance of femtosecond laser-induced breakdown spectroscopy (fs-LIBS) for the determination of elements in animal tissues. Sample pellets were prepared from certified reference materials, such as liver, kidney, muscle, hepatopancreas, and oyster, after cryogenic grinding assisted homogenization. Individual samples were placed in a two-axis computer-controlled translation stage that moved in the plane orthogonal to a beam originating from a Ti:Sapphire chirped-pulse amplification (CPA) laser system operating at 800 nm and producing a train of 840 μJ and 40 fs pulses at 90 Hz. The plasma emission was coupled into the optical fiber of a high-resolution intensified charge-coupled device (ICCD)–echelle spectrometer. Time-resolved characteristics of the laser-produced plasmas showed that the best results were obtained with delay times between 80 and 120 ns. Data obtained indicate both that it is a matrix-independent sampling process and that fs-LIBS can be used for the determination of Ca, Cu, Fe, K, Mg, Na, and P, but efforts must be made to obtain more appropriate detection limits for Al, Sr, and Zn.

Laser-Induced Breakdown Spectroscopy for Detection of Lead in Concrete

1996 ◽  
Vol 50 (7) ◽  
pp. 880-884 ◽  
Author(s):  
Andrew V. Pakhomov ◽  
William Nichols ◽  
Jacek Borysow
Keyword(s):  
Sample Surface ◽  
Lead Contamination ◽  
Laser Induced Breakdown Spectroscopy ◽  
Time Range ◽  
Calibration Function ◽  
Time Resolved ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
The Matrix ◽  
Scale Down

Time-resolved laser-induced breakdown spectroscopy was applied for quantitative measurement of lead content in concrete at levels down to 10 ppm. The breakdown was formed at the sample surface by a Q-switched ND:YAG laser operating at a 1.06-μm wavelength and a repetition rate of 10 Hz. Contamination levels were inferred from the ratio of the integrated emission line of lead to a known reference line of the matrix. The lead contamination can be determined on an absolute scale down to 10 ppm at an optimum delay time of 3.0 μs. These results were derived from analysis of the temporal evolution of the calibration function within a 0.1- to 19.0-μs time range. The calibration function exhibits no dependence on the incident laser pulse energy, which was varied from 250 to 400 mJ.

scholarly journals Lasers Have the Makings of a 21st-Century Geoscience Tool

Eos ◽  
2021 ◽  
Vol 102 ◽  
Author(s):  
Richard Sima
Keyword(s):  
21St Century ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Wide Range ◽  
Laser Induced Breakdown

Laser-induced breakdown spectroscopy is a versatile geochemical tool being used in a wide range of applications, from Mars rovers to earthly rock identification.

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