Laser spectroscopy methods in the development of laser sensor elements for underwater robotics

Букин, О. А.; Mayor, A. Yu.; Proschenko, D. Yu.; Bukin, Ilya; Болотов, В. В.; Chekhlenok, A. A.; Mun, Sil-Gu

doi:10.1134/s1024856017050049

Cited by 5 publications

(4 citation statements)

References 11 publications

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“…35 A variety of nonlinear interactions of laser irradiation with water might also affect the initiation of laser breakdown. 13 According to our previous studies, the long-pulse LIBS of laser under FR mode was unable to induce the plasma to generate spectra signals, which indicated that just the long-pulse laser could not generate the observable plasma due to the lower power density than the breakdown threshold. During the LS-DP-LIBS processes, the plasma was induced by short pulse, but the generation and development of plasma were affected by long pulse.…”

Section: Comparison Of Sp-libs and Ls-dp-libsmentioning

confidence: 95%

“…[2][3][4][5][6][7] LIBS can provide distinct spectral signatures characteristic of all chemical elements in various conditions, such as solid, liquid, gas, and aerosol in industries, environment, medical, biological, aerospace, ocean, etc. [8][9][10][11][12] The measurement of the liquid sample and underwater sample is still a critical challenge, even if several LIBS systems have been developed for undersea trials, such as the laser sensor elements for underwater robotics, compact deep-sea LIBS prototype, 13,14 LIBS liquids analyzer developed by Applied Photonics Ltd. The plasma lifetime is very short for 1 underwater measurement due to the pressure, fluctuation, and quenching effects of liquid.…”

Section: Introductionmentioning

confidence: 99%

“…It is difficult to acquire the required power density to initiate the laser-induced breakdown processes for underwater samples. 13,14 Various research groups have discussed the formation and evolution of laser-induced plasma of liquid itself and submerged samples. Types of laser excitation including single pulse, double pulse, and multi-pulse have also been considered.…”

Section: Introductionmentioning

confidence: 99%

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Quantitative Analysis of Manganese in Underwater Steel Samples Using Long–Short Double-Pulse Laser-Induced Breakdown Spectroscopy

et al. 2021

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The long–short double-pulse laser-induced breakdown spectroscopy (LS-DP-LIBS) method was applied to qualitative and quantitative analyses of underwater steel samples to improve the detection ability of underwater measurement. The stable plasma intensity and discrete emission lines were detected using LS-DP-LIBS when comparing the measured results of single-pulse LIBS (SP-LIBS) and LS-DP-LIBS. The long pulse produces a cavitation bubble without plasma, and the short pulse induces the plasma of steel samples within the bubble. The detection features of LS-DP-LIBS for underwater steel samples were discussed in different intra-pulse delay time, long-pulse width, and delay time conditions when analyzing the measured spectra, the signal intensity of Fe(I) at 400.524 nm and 402.187 nm, Mn(I) at 404.136 nm, and intensity ratio of Mn(I) 404.136 nm/Fe(I) 402.187 nm. The results indicated that the plasma stability and spectral signal intensity were improved significantly with a long-pulse width of 80 µs in the intra-pulse delay time of 70 µs, which were appropriate for bubble formation and plasma generation. According to the discussion of the delay time effect, the state of generated plasma was almost stable from 650 ns to 850 ns. Manganese (Mn) contents in steel samples were analyzed quantitatively when measuring five steel samples with different Mn contents using LS-DP-LIBS in optimal experimental conditions. A strong linear dependence was observed with R2=0.9842, which demonstrated the feasibility and appropriateness of quantitative analysis for underwater measurement using LS-DP-LIBS.

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Section: Comparison Of Sp-libs and Ls-dp-libsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Quantitative Analysis of Manganese in Underwater Steel Samples Using Long–Short Double-Pulse Laser-Induced Breakdown Spectroscopy

et al. 2021

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“…Today the robot hand, which will be equipped with an optic fiber, is under development by the authors. A submersible box for the LIF and LIBS sensors was tested (the main elements of the LIF sensor with software) [ 25 ]. Figure 2 a shows the image of the LIF arrangement with no hermetic box.…”

Section: Instrument Designmentioning

confidence: 99%

Laser Spectroscopic Sensors for the Development of Anthropomorphic Robot Sensitivity

Букин

Proschenko

Chekhlenok

et al. 2018

Sensors

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The development of underwater robotics sensitivity, which is based on the sensors of laser spectroscopy methods, have been discussed. The ways to improve Laser Induced Fluorescence (LIF) and Laser Induced Breakdown Spectroscopy (LIBS) methods were investigated in order to develop and create laser sensitivity for underwater robotics. A brief overview is done in the article, where LIF and LIBS spectroscopy in underwater robotics are used as spectroscopy sensors in order to investigate underwater environments by means of underwater vehicles. Limit of Detection (LoD) of oil and oil product solutions in the seawater have been detected by means of nanosecond and femtosecond spectroscopy LIF. All results, which had been received by laser pulses of different duration, were compared. The same experiments have been provided in order to measure concentrations of elements in the seawater and solutions by the LIBS method. It was discovered that the LoD of a group of elements was reduced when the femtosecond LIBS was used. Anthropomorphic complexes were under discussion in order to adopt laser spectroscopy sensors for underwater environments. The submersible module, which was constructed to investigate and examine laser spectroscopy sensors, has been described.

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Limit of detection and dynamics of fluoresence spectrums of different types of oil products by induced femtosecond pulses

Proschenko¹,

Букин²,

Chekhlenok³

et al. 2018

24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics

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Laser spectroscopy methods in the development of laser sensor elements for underwater robotics

Cited by 5 publications

References 11 publications

Quantitative Analysis of Manganese in Underwater Steel Samples Using Long–Short Double-Pulse Laser-Induced Breakdown Spectroscopy

Quantitative Analysis of Manganese in Underwater Steel Samples Using Long–Short Double-Pulse Laser-Induced Breakdown Spectroscopy

Laser Spectroscopic Sensors for the Development of Anthropomorphic Robot Sensitivity

Limit of detection and dynamics of fluoresence spectrums of different types of oil products by induced femtosecond pulses

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