Development of microwave-enhanced spark-induced breakdown spectroscopy

Ikeda, Yuji; Moon, Ahsa; Kaneko, Masashi

doi:10.1364/ao.49.000c95

Cited by 52 publications

(20 citation statements)

References 15 publications

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“…A secondary excitation of the laser-induced plasma can enhance the optical signals and improve the detection sensitivity. Techniques employed for secondary excitation in LIBS include double laser pulses (St-Onge et al , 1998;Babushok et al , 2006;Ctvrtn í kova et al , 2008;Windom and Hahn, 2009;Viskup et al , 2010;Heilbrunner et al , 2012), electric spark discharges (Chen et al , 2010;Kexue et al , 2010), and radiofrequency (Bian et al , 2005;Deng et al , 2010;Pedarnig et al , 2011) and microwave (Ikeda et al , 2010;Liu et al , 2010) radiation. …”

Section: Multi-element Detectionmentioning

confidence: 99%

Application of laser-induced breakdown spectroscopy to the analysis of secondary materials in industrial production

Pedarnig

2014

Laser Spectroscopy for Sensing

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Section: Multi-element Detectionmentioning

confidence: 99%

Application of laser-induced breakdown spectroscopy to the analysis of secondary materials in industrial production

Pedarnig

2014

Laser Spectroscopy for Sensing

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“…Kearton et al and Liu et al reported intensity enhance- ments obtained by using laser-assisted MW spectroscopy (LAMPS) [19,20]. Ikeda et al used MWs to extend the lifetime of plasma emission to the order of a millisecond [21]. However, these methods required the use of waveguides and microwave cavities.…”

Section: Introductionmentioning

confidence: 99%

The role of microwaves in the enhancement of laser-induced plasma emission

et al. 2016

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We studied experimentally the effect of microwaves (MWs) on the enhancement of plasma emission achieved by laser-induced breakdown spectroscopy (LIBS). A laser plasma was generated on a calcium oxide pellet by a Nd:YAG laser (5 mJ, 532 nm, 8 ns) in reduced-pressure argon surrounding gas. A MW radiation (400 W) was injected into the laser plasma via a loop antenna placed immediately above the laser plasma to enhance the plasma emission. The results confirmed that when the electromagnetic field was introduced into the laser plasma region by the MWs, the lifetime of the plasma was extended from 50 to 500 µs, similar to the MW duration. Furthermore, the plasma temperature and electron density increased to approximately 10900 K and 1.5×10 18 cm −3 , respectively and the size of the plasma emission was extended to 15 mm in diameter. As a result, the emission intensity of Ca lines obtained using LIBS with MWs was enhanced by approximately 200 times compared to the case of LIBS without MWs.Keywords laser-induced breakdown spectroscopy, LIBS, microwave-assisted laser-induced breakdown spectroscopy, MA-LIBS, enhancement of laser plasma emission PACS numbers 42.62.Fi, 95.75.Fg,

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“…Research and development efforts invested in the last two decades have yielded a number of enhanced LIBS techniques with excellent sensitivity and accuracy. [3][4][5][6] As the performance of LIBS evolves in laboratories, there is increasing focus on the development of portable LIBS instruments for use in the field as stand-off sensing tools for harsh or dangerous environments. [7][8][9] This has been hindered by the lack of compact, high efficiency, and highly reliable lasers that can produce plasmas with sufficient optical emission.…”

Section: Introductionmentioning

confidence: 99%

Development of a compact vertical-cavity surface-emitting laser end-pumped actively Q-switched laser for laser-induced breakdown spectroscopy

Liu

Chen

et al. 2016

Review of Scientific Instruments

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Development of a compact verticalcavity surface-emitting laser end-pumped actively Q-switched laser for laser-induced breakdown spectroscopy" (2016 This paper reports the development of a compact and portable actively Q-switched Nd:YAG laser and its applications in laser-induced breakdown spectroscopy (LIBS). The laser was end-pumped by a vertical-cavity surface-emitting laser (VCSEL). The cavity lases at a wavelength of 1064 nm and produced pulses of 16 ns with a maximum pulse energy of 12.9 mJ. The laser exhibits a reliable performance in terms of pulse-to-pulse stability and timing jitter. The LIBS experiments were carried out using this laser on NIST standard alloy samples. Shot-to-shot LIBS signal stability, crater profile, time evolution of emission spectra, plasma electron density and temperature, and limits of detection were studied and reported in this paper. The test results demonstrate that the VCSEL-pumped solid-state laser is an effective and compact laser tool for laser remote sensing applications. C 2016 AIP Publishing LLC.[http://dx

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Development of microwave-enhanced spark-induced breakdown spectroscopy

Cited by 52 publications

References 15 publications

Application of laser-induced breakdown spectroscopy to the analysis of secondary materials in industrial production

Application of laser-induced breakdown spectroscopy to the analysis of secondary materials in industrial production

The role of microwaves in the enhancement of laser-induced plasma emission

Development of a compact vertical-cavity surface-emitting laser end-pumped actively Q-switched laser for laser-induced breakdown spectroscopy

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