Fluorescent detection of narrow absorption lines in intracavity atomic spectroscopy

Бураков, В. С.; Misakov, P. Ya.; Naumenkov, P. A.; Nechaev, S. V.; Raikov, S. N.

doi:10.1007/bf00615426

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…The most spread variant of the ICLS with a broadband tunable laser is similar to that employed in conventional continuum source AAS [4], but the latter has smaller limits of detection. Therefore the ICLS commonly used the same vaporizers as the AAS: often -flame atomization [5,6], rarely -electrothermal vaporization [7,8], and in single works -electrical discharge [9,10] and laser ablation [11,12] V.S. Burakov · P.Ya.…”

Section: Introductionmentioning

confidence: 99%

Intracavity laser atomic absorption spectrometry with graphite furnace atomizer or pulsed laser sampler

Бураков¹,

Misakov²,

Raikov³

1996

Analytical and Bioanalytical Chemistry

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An absorption intracavity laser spectrometer with two types of sample vaporization systems (graphite furnace electrothermal atomizer or laser sampler) is described that can be used for the determination of trace amounts of metals (Al, Cr, Fe and Mn) in liquid samples and at the surface of solid targets. The limits of detection for the elements tested are lower than those obtained by modern conventional spectrometers. The examined technique provides a wide dynamic range of linear standard calibration curves.

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Section: Introductionmentioning

confidence: 99%

Intracavity laser atomic absorption spectrometry with graphite furnace atomizer or pulsed laser sampler

Бураков¹,

Misakov²,

Raikov³

1996

Analytical and Bioanalytical Chemistry

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“…Such detectors were proposed for the ICL spectrometers in a number of works: fluorescent detectors of molecular [5] and atomic [6] species; photoionization [7], optogalvanic [8,9] and photoacoustic [10] detection. Unfortunately, apart from the demonstration of some advantages of resonant detection in the early publications, further development of this registration technique seems to be lacking.…”

Section: Introductionmentioning

confidence: 99%

Optimization of detection of atomic absorption lines in intracavity laser spectroscopy

Бураков¹,

Misakov²,

Raikov³

1996

Analytical and Bioanalytical Chemistry

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An intracavity laser spectrometer equipped with a graphite furnace electrothermal atomizer and two alternative types of narrow atomic lines detection schemes (high resolution diffraction spectrograph with optical multichannel analyzer or a resonant detector based on a hollow-cathode lamp) is described. Such system was used to determine ultra-trace amounts of lithium and strontium in aqueous solutions. A significant reduction in the measurable absorbance was demonstrated for both elements. Careful optimization of the operating conditions of the detection systems and a comparison of their typical features and advantages were performed.

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Dynamics of laser intracavity absorption

1985

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The dynamical behavior of a multimode dye laser with an intracavity absorber has been investigated theoretically as well as experimentally. This behavior is described by a system of rate equations which has to include the inAuence of saturation in the case of large absorption coefficients.With the rate-equation-system model calculations have been performed for the cases of saturated and unsaturated intracavity absorption. Saturation of the absorption is shown to severely reduce the sensitivity of intracavity absorption. In general, the sensitivity is governed by the average lifetime of the individual modes. This mode lifetime is limited by large intensity fluctuations which are capable of quenching individual modes. The probability for mode quenching is shown to increase with increasing spectral power density. For this reason, intracavity absorption gains sensitivity close to the lasing threshold. The theoretical results are found to be in excellent agreement with our measurements. In addition, discrepancies in previous work have been resolved within the framework of our theory. With the detailed understanding of the intracavity absorption, reliable measurements of very small, absolute absorption coefficients have become possible.

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Fluorescent detection of narrow absorption lines in intracavity atomic spectroscopy

Cited by 3 publications

References 6 publications

Intracavity laser atomic absorption spectrometry with graphite furnace atomizer or pulsed laser sampler

Intracavity laser atomic absorption spectrometry with graphite furnace atomizer or pulsed laser sampler

Optimization of detection of atomic absorption lines in intracavity laser spectroscopy

Dynamics of laser intracavity absorption

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