High repetition rate laser-induced breakdown spectroscopy using acousto-optically gated detection
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F14%3APU110235" target="_blank" >RIV/00216305:26210/14:PU110235 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1063/1.4890337" target="_blank" >http://dx.doi.org/10.1063/1.4890337</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/1.4890337" target="_blank" >10.1063/1.4890337</a>
Alternative languages
Result language
angličtina
Original language name
High repetition rate laser-induced breakdown spectroscopy using acousto-optically gated detection
Original language description
This contribution introduces a new type of setup for fast sample analysis using laser-induced breakdown spectroscopy (LIBS). The novel design combines a high repetition rate laser (up to 50 kHz) as excitation source and an acousto-optical modulator (AOM) as a fast switch for temporally gating the detection of the emitted light. The plasma radiation is led through the active medium of the AOM where it is diffracted on the transient ultrasonic Bragg grid. The diffracted radiation is detected by a compact Czerny-Turner spectrometer equipped with a CCD line detector. Utilizing the new combination of high repetition rate lasers and AOM gated detection, rapid measurements with total integration times of only 10 ms resulted in a limit of detection (LOD) of 0.13 wt.% for magnesium in aluminum alloys. This short integration time corresponds to 100 analyses/s. Temporal gating of LIP radiation results in improved LODs and consecutively higher sensitivity of the LIBS setup. Therefore, an AOM could be beneficially utilized to temporally detect plasmas induced by high repetition rate lasers. The AOM in combination with miniaturized Czerny-Turner spectrometers equipped with CCD line detectors and small footprint diode pumped solid state lasers results in temporally gateable compact LIBS setups.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
—
Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Review of Scientific Instruments
ISSN
0034-6748
e-ISSN
1089-7623
Volume of the periodical
85
Issue of the periodical within the volume
073104
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
073104-073104
UT code for WoS article
000341176600005
EID of the result in the Scopus database
2-s2.0-84904957656